53812915538 has 8 divisors (see below), whose sum is σ = 80732292732. Its totient is φ = 26902151296.

The previous prime is 53812915529. The next prime is 53812915549. The reversal of 53812915538 is 83551921835.

It can be written as a sum of positive squares in 2 ways, for example, as 44598259489 + 9214656049 = 211183^2 + 95993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137595 + ... + 2162622.

Almost surely, 2^53812915538 is an apocalyptic number.

53812915538 is a deficient number, since it is larger than the sum of its proper divisors (26919377194).

53812915538 is a wasteful number, since it uses less digits than its factorization.

53812915538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306476.

The product of its digits is 1296000, while the sum is 50.

The spelling of 53812915538 in words is "fifty-three billion, eight hundred twelve million, nine hundred fifteen thousand, five hundred thirty-eight".