52177990854 has 128 divisors (see below), whose sum is σ = 120842108928. Its totient is φ = 14864636160.

The previous prime is 52177990847. The next prime is 52177990867. The reversal of 52177990854 is 45809977125.

It is a junction number, because it is equal to n+sod(n) for n = 52177990794 and 52177990803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40668097 + ... + 40669379.

It is an arithmetic number, because the mean of its divisors is an integer number (944078976).

Almost surely, 2^52177990854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52177990854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60421054464).

52177990854 is an abundant number, since it is smaller than the sum of its proper divisors (68664118074).

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

52177990854 is a wasteful number, since it uses less digits than its factorization.

52177990854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 52177990854 in words is "fifty-two billion, one hundred seventy-seven million, nine hundred ninety thousand, eight hundred fifty-four".