155457194634 has 48 divisors (see below), whose sum is σ = 397359106560. Its totient is φ = 42983555040.

The previous prime is 155457194611. The next prime is 155457194653. The reversal of 155457194634 is 436491754551.

155457194634 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 571 + 9 + 4 + 63 + 4 = 666.

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, 19895889 + ... + 19903700.

It is an arithmetic number, because the mean of its divisors is an integer number (8278314720).

Almost surely, 2^155457194634 is an apocalyptic number.

155457194634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

155457194634 is an abundant number, since it is smaller than the sum of its proper divisors (241901911926).

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

155457194634 is a wasteful number, since it uses less digits than its factorization.

155457194634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39799635 (or 39799632 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 155457194634 in words is "one hundred fifty-five billion, four hundred fifty-seven million, one hundred ninety-four thousand, six hundred thirty-four".