155562191928 has 160 divisors (see below), whose sum is σ = 511892987760. Its totient is φ = 43513873920.

The previous prime is 155562191909. The next prime is 155562191999. The reversal of 155562191928 is 829191265551.

155562191928 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 621 + 9 + 1 + 9 + 2 + 8 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 746725 + ... + 932052.

Almost surely, 2^155562191928 is an apocalyptic number.

155562191928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155562191928 is an abundant number, since it is smaller than the sum of its proper divisors (356330795832).

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

155562191928 is a wasteful number, since it uses less digits than its factorization.

155562191928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678819 (or 1678806 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 54.

The spelling of 155562191928 in words is "one hundred fifty-five billion, five hundred sixty-two million, one hundred ninety-one thousand, nine hundred twenty-eight".