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145805904001 = 4123711499891
BaseRepresentation
bin1000011111001010110…
…1011000100010000001
3111221100110112100202201
42013302231120202001
54342102302412001
6150552102313201
713351130510062
oct2076255304201
9457313470681
10145805904001
11569216a480a
1224312128801
131099868cb54
1470b2754569
153bd57b9501
hex21f2b58881

145805904001 has 8 divisors (see below), whose sum is σ = 149425240608. Its totient is φ = 142189572000.

The previous prime is 145805903987. The next prime is 145805904043. The reversal of 145805904001 is 100409508541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145805904001 - 211 = 145805901953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145805904071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652735 + ... + 847156.

It is an arithmetic number, because the mean of its divisors is an integer number (18678155076).

Almost surely, 2145805904001 is an apocalyptic number.

It is an amenable number.

145805904001 is a deficient number, since it is larger than the sum of its proper divisors (3619336607).

145805904001 is a wasteful number, since it uses less digits than its factorization.

145805904001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502303.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 145805904001 in words is "one hundred forty-five billion, eight hundred five million, nine hundred four thousand, one".

Divisors: 1 41 2371 97211 1499891 61495531 3556241561 145805904001