52891241864 has 16 divisors (see below), whose sum is σ = 99178433100. Its totient is φ = 26443659712.

The previous prime is 52891241861. The next prime is 52891241881. The reversal of 52891241864 is 46814219825.

It can be written as a sum of positive squares in 2 ways, for example, as 46724280964 + 6166960900 = 216158^2 + 78530^2 .

It is a super-2 number, since 2×52891241864² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52891241861) 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, 127199 + ... + 349230.

Almost surely, 2^52891241864 is an apocalyptic number.

It is an amenable number.

52891241864 is a deficient number, since it is larger than the sum of its proper divisors (46287191236).

52891241864 is a wasteful number, since it uses less digits than its factorization.

52891241864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490312 (or 490308 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The spelling of 52891241864 in words is "fifty-two billion, eight hundred ninety-one million, two hundred forty-one thousand, eight hundred sixty-four".