155072902728 has 16 divisors (see below), whose sum is σ = 387682256880. Its totient is φ = 51690967568.

The previous prime is 155072902711. The next prime is 155072902741. The reversal of 155072902728 is 827209270551.

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, 3230685450 + ... + 3230685497.

It is an arithmetic number, because the mean of its divisors is an integer number (24230141055).

Almost surely, 2^155072902728 is an apocalyptic number.

It is an amenable number.

155072902728 is an abundant number, since it is smaller than the sum of its proper divisors (232609354152).

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

155072902728 is a wasteful number, since it uses less digits than its factorization.

155072902728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461370956 (or 6461370952 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 155072902728 in words is "one hundred fifty-five billion, seventy-two million, nine hundred two thousand, seven hundred twenty-eight".