155500640475 has 24 divisors (see below), whose sum is σ = 257211156480. Its totient is φ = 82896009120.

The previous prime is 155500640461. The next prime is 155500640573. The reversal of 155500640475 is 574046005551.

It is not a de Polignac number, because 155500640475 - 2⁵ = 155500640443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304195 + ... + 635244.

It is an arithmetic number, because the mean of its divisors is an integer number (10717131520).

Almost surely, 2^155500640475 is an apocalyptic number.

155500640475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155500640475 is a deficient number, since it is larger than the sum of its proper divisors (101710516005).

155500640475 is a wasteful number, since it uses less digits than its factorization.

155500640475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941659 (or 941654 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 155500640475 in words is "one hundred fifty-five billion, five hundred million, six hundred forty thousand, four hundred seventy-five".