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30372520320001 = 171786618842353
BaseRepresentation
bin1101110011111101001110…
…10010001101110000000001
310222112120210011101202012001
412321332213102031300001
512440110410200220001
6144332535422304001
76253225240021126
oct671764722156001
9128476704352161
1030372520320001
11974aa05a02112
1234a6493728001
1313c41688aa8c2
14770075b2474d
1537a0d3e8a001
hex1b9fa748dc01

30372520320001 has 4 divisors (see below), whose sum is σ = 32159139162372. Its totient is φ = 28585901477632.

The previous prime is 30372520319957. The next prime is 30372520320061. The reversal of 30372520320001 is 10002302527303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19832985323776 + 10539534996225 = 4453424^2 + 3246465^2 .

It is a cyclic number.

It is not a de Polignac number, because 30372520320001 - 29 = 30372520319489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30372520320061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893309421160 + ... + 893309421193.

It is an arithmetic number, because the mean of its divisors is an integer number (8039784790593).

Almost surely, 230372520320001 is an apocalyptic number.

It is an amenable number.

30372520320001 is a deficient number, since it is larger than the sum of its proper divisors (1786618842371).

30372520320001 is a wasteful number, since it uses less digits than its factorization.

30372520320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786618842370.

The product of its (nonzero) digits is 7560, while the sum is 28.

Adding to 30372520320001 its reverse (10002302527303), we get a palindrome (40374822847304).

The spelling of 30372520320001 in words is "thirty trillion, three hundred seventy-two billion, five hundred twenty million, three hundred twenty thousand, one".

Divisors: 1 17 1786618842353 30372520320001