52121199431 has 32 divisors (see below), whose sum is σ = 63308044800. Its totient is φ = 41962032000.

The previous prime is 52121199413. The next prime is 52121199443. The reversal of 52121199431 is 13499112125.

It is a de Polignac number, because none of the positive numbers 2^k-52121199431 is a prime.

It is a super-2 number, since 2×52121199431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121199401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2179085 + ... + 2202873.

It is an arithmetic number, because the mean of its divisors is an integer number (1978376400).

Almost surely, 2^52121199431 is an apocalyptic number.

52121199431 is a deficient number, since it is larger than the sum of its proper divisors (11186845369).

52121199431 is a wasteful number, since it uses less digits than its factorization.

52121199431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24119.

The product of its digits is 19440, while the sum is 38.

The spelling of 52121199431 in words is "fifty-two billion, one hundred twenty-one million, one hundred ninety-nine thousand, four hundred thirty-one".