52178786957 has 4 divisors (see below), whose sum is σ = 56922313056. Its totient is φ = 47435260860.

The previous prime is 52178786929. The next prime is 52178786963. The reversal of 52178786957 is 75968787125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52178786957 - 2⁶ = 52178786893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52178786893 and 52178786902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52178786927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371763033 + ... + 2371763054.

It is an arithmetic number, because the mean of its divisors is an integer number (14230578264).

Almost surely, 2^52178786957 is an apocalyptic number.

It is an amenable number.

52178786957 is a deficient number, since it is larger than the sum of its proper divisors (4743526099).

52178786957 is a wasteful number, since it uses less digits than its factorization.

52178786957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743526098.

The product of its digits is 59270400, while the sum is 65.

The spelling of 52178786957 in words is "fifty-two billion, one hundred seventy-eight million, seven hundred eighty-six thousand, nine hundred fifty-seven".