156611421054 has 160 divisors (see below), whose sum is σ = 385525236096. Its totient is φ = 47125126080.

The previous prime is 156611421023. The next prime is 156611421067. The reversal of 156611421054 is 450124116651.

156611421054 is a `hidden beast` number, since 1 + 566 + 1 + 1 + 42 + 1 + 0 + 54 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 255483252 + ... + 255483864.

Almost surely, 2^156611421054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156611421054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192762618048).

156611421054 is an abundant number, since it is smaller than the sum of its proper divisors (228913815042).

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

156611421054 is a wasteful number, since it uses less digits than its factorization.

156611421054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1403 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 156611421054 in words is "one hundred fifty-six billion, six hundred eleven million, four hundred twenty-one thousand, fifty-four".