52500692138 has 4 divisors (see below), whose sum is σ = 78751038210. Its totient is φ = 26250346068.

The previous prime is 52500692131. The next prime is 52500692159. The reversal of 52500692138 is 83129600525.

52500692138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45366018049 + 7134674089 = 212993^2 + 84467^2 .

It is a super-2 number, since 2×52500692138² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52500692095 and 52500692104.

It is not an unprimeable number, because it can be changed into a prime (52500692131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13125173033 + ... + 13125173036.

Almost surely, 2^52500692138 is an apocalyptic number.

52500692138 is a deficient number, since it is larger than the sum of its proper divisors (26250346072).

52500692138 is a wasteful number, since it uses less digits than its factorization.

52500692138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26250346071.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 52500692138 in words is "fifty-two billion, five hundred million, six hundred ninety-two thousand, one hundred thirty-eight".