155986795912 has 8 divisors (see below), whose sum is σ = 292475242350. Its totient is φ = 77993397952.

The previous prime is 155986795907. The next prime is 155986795931. The reversal of 155986795912 is 219597689551.

It can be written as a sum of positive squares in only one way, i.e., 136239239236 + 19747556676 = 369106^2 + 140526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9749174737 + ... + 9749174752.

Almost surely, 2^155986795912 is an apocalyptic number.

It is an amenable number.

155986795912 is a deficient number, since it is larger than the sum of its proper divisors (136488446438).

155986795912 is a wasteful number, since it uses less digits than its factorization.

155986795912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19498349495 (or 19498349491 counting only the distinct ones).

The product of its digits is 61236000, while the sum is 67.

The spelling of 155986795912 in words is "one hundred fifty-five billion, nine hundred eighty-six million, seven hundred ninety-five thousand, nine hundred twelve".