53657039918 has 4 divisors (see below), whose sum is σ = 80485559880. Its totient is φ = 26828519958.

The previous prime is 53657039903. The next prime is 53657039951. The reversal of 53657039918 is 81993075635.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13414259978 + ... + 13414259981.

It is an arithmetic number, because the mean of its divisors is an integer number (20121389970).

Almost surely, 2^53657039918 is an apocalyptic number.

53657039918 is a deficient number, since it is larger than the sum of its proper divisors (26828519962).

53657039918 is a wasteful number, since it uses less digits than its factorization.

53657039918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26828519961.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 53657039918 in words is "fifty-three billion, six hundred fifty-seven million, thirty-nine thousand, nine hundred eighteen".