155117086312 has 16 divisors (see below), whose sum is σ = 303489951840. Its totient is φ = 74186432496.

The previous prime is 155117086303. The next prime is 155117086321. The reversal of 155117086312 is 213680711551.

It is an interprime number because it is at equal distance from previous prime (155117086303) and next prime (155117086321).

It is a super-2 number, since 2×155117086312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421513638 + ... + 421514005.

It is an arithmetic number, because the mean of its divisors is an integer number (18968121990).

Almost surely, 2^155117086312 is an apocalyptic number.

It is an amenable number.

155117086312 is a deficient number, since it is larger than the sum of its proper divisors (148372865528).

155117086312 is a wasteful number, since it uses less digits than its factorization.

155117086312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843027672 (or 843027668 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

Adding to 155117086312 its reverse (213680711551), we get a palindrome (368797797863).

The spelling of 155117086312 in words is "one hundred fifty-five billion, one hundred seventeen million, eighty-six thousand, three hundred twelve".