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70030020101 = 96497257749
BaseRepresentation
bin100000100111000011…
…1010100111000000101
320200202111211121201012
41001032013110320011
52121410141120401
652101002212005
75026260230546
oct1011607247005
9220674747635
1070030020101
1127777136678
12116a4ab4005
1367b0728822
1435649cc4cd
151c4d0908bb
hex104e1d4e05

70030020101 has 4 divisors (see below), whose sum is σ = 70037287500. Its totient is φ = 70022752704.

The previous prime is 70030020097. The next prime is 70030020113. The reversal of 70030020101 is 10102003007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10102003007 = 17594235471.

It can be written as a sum of positive squares in 2 ways, for example, as 15274488100 + 54755532001 = 123590^2 + 233999^2 .

It is a cyclic number.

It is not a de Polignac number, because 70030020101 - 22 = 70030020097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70030020161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3619226 + ... + 3638523.

It is an arithmetic number, because the mean of its divisors is an integer number (17509321875).

Almost surely, 270030020101 is an apocalyptic number.

It is an amenable number.

70030020101 is a deficient number, since it is larger than the sum of its proper divisors (7267399).

70030020101 is an equidigital number, since it uses as much as digits as its factorization.

70030020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7267398.

The product of its (nonzero) digits is 42, while the sum is 14.

Adding to 70030020101 its reverse (10102003007), we get a palindrome (80132023108).

The spelling of 70030020101 in words is "seventy billion, thirty million, twenty thousand, one hundred one".

Divisors: 1 9649 7257749 70030020101