155979745026 has 16 divisors (see below), whose sum is σ = 356525131584. Its totient is φ = 44565641424.

The previous prime is 155979744961. The next prime is 155979745027. The reversal of 155979745026 is 620547979551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155979745027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1856901685 + ... + 1856901768.

It is an arithmetic number, because the mean of its divisors is an integer number (22282820724).

Almost surely, 2^155979745026 is an apocalyptic number.

155979745026 is an abundant number, since it is smaller than the sum of its proper divisors (200545386558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155979745026 is a wasteful number, since it uses less digits than its factorization.

155979745026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713803465.

The product of its (nonzero) digits is 23814000, while the sum is 60.

The spelling of 155979745026 in words is "one hundred fifty-five billion, nine hundred seventy-nine million, seven hundred forty-five thousand, twenty-six".