155642698000 has 40 divisors (see below), whose sum is σ = 376344048600. Its totient is φ = 62257078400.

The previous prime is 155642697997. The next prime is 155642698037. The reversal of 155642698000 is 896246551.

It can be written as a sum of positive squares in 4 ways, for example, as 32053889296 + 123588808704 = 179036^2 + 351552^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38908675 + ... + 38912674.

It is an arithmetic number, because the mean of its divisors is an integer number (9408601215).

Almost surely, 2^155642698000 is an apocalyptic number.

155642698000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155642698000 is an abundant number, since it is smaller than the sum of its proper divisors (220701350600).

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

155642698000 is an equidigital number, since it uses as much as digits as its factorization.

155642698000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77821372 (or 77821356 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 155642698000 in words is "one hundred fifty-five billion, six hundred forty-two million, six hundred ninety-eight thousand".