155516605959 has 32 divisors (see below), whose sum is σ = 243983384064. Its totient is φ = 86867671680.

The previous prime is 155516605927. The next prime is 155516605967. The reversal of 155516605959 is 959506615551.

It is not a de Polignac number, because 155516605959 - 2⁵ = 155516605927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155516605899 and 155516605908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155516645959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2584 + ... + 557709.

It is an arithmetic number, because the mean of its divisors is an integer number (7624480752).

Almost surely, 2^155516605959 is an apocalyptic number.

155516605959 is a deficient number, since it is larger than the sum of its proper divisors (88466778105).

155516605959 is a wasteful number, since it uses less digits than its factorization.

155516605959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560967.

The product of its (nonzero) digits is 9112500, while the sum is 57.

The spelling of 155516605959 in words is "one hundred fifty-five billion, five hundred sixteen million, six hundred five thousand, nine hundred fifty-nine".