155904717213 has 48 divisors (see below), whose sum is σ = 258381926400. Its totient is φ = 88737640992.

The previous prime is 155904717203. The next prime is 155904717233. The reversal of 155904717213 is 312717409551.

155904717213 is a `hidden beast` number, since 1 + 5 + 590 + 47 + 1 + 7 + 2 + 13 = 666.

It is not a de Polignac number, because 155904717213 - 2⁵ = 155904717181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155904717203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17467770 + ... + 17476692.

It is an arithmetic number, because the mean of its divisors is an integer number (5382956800).

Almost surely, 2^155904717213 is an apocalyptic number.

It is an amenable number.

155904717213 is a deficient number, since it is larger than the sum of its proper divisors (102477209187).

155904717213 is a wasteful number, since it uses less digits than its factorization.

155904717213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998 (or 9995 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 155904717213 in words is "one hundred fifty-five billion, nine hundred four million, seven hundred seventeen thousand, two hundred thirteen".