53172478686 has 16 divisors (see below), whose sum is σ = 106641187200. Its totient is φ = 17674787928.

The previous prime is 53172478649. The next prime is 53172478691. The reversal of 53172478686 is 68687427135.

53172478686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53172478686² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12340576 + ... + 12344883.

It is an arithmetic number, because the mean of its divisors is an integer number (6665074200).

Almost surely, 2^53172478686 is an apocalyptic number.

53172478686 is an abundant number, since it is smaller than the sum of its proper divisors (53468708514).

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

53172478686 is a wasteful number, since it uses less digits than its factorization.

53172478686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24685823.

The product of its digits is 13547520, while the sum is 57.

The spelling of 53172478686 in words is "fifty-three billion, one hundred seventy-two million, four hundred seventy-eight thousand, six hundred eighty-six".