155556460791 has 24 divisors (see below), whose sum is σ = 225773982720. Its totient is φ = 103206163200.

The previous prime is 155556460789. The next prime is 155556460849. The reversal of 155556460791 is 197064655551.

It is a happy number.

155556460791 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 564 + 6 + 0 + 79 + 1 = 666.

It is not a de Polignac number, because 155556460791 - 2¹ = 155556460789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155556460291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2007946 + ... + 2083976.

It is an arithmetic number, because the mean of its divisors is an integer number (9407249280).

Almost surely, 2^155556460791 is an apocalyptic number.

155556460791 is a deficient number, since it is larger than the sum of its proper divisors (70217521929).

155556460791 is a wasteful number, since it uses less digits than its factorization.

155556460791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77127 (or 77124 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 54.

The spelling of 155556460791 in words is "one hundred fifty-five billion, five hundred fifty-six million, four hundred sixty thousand, seven hundred ninety-one".