53138873694 has 16 divisors (see below), whose sum is σ = 111871313280. Its totient is φ = 16780696920.

The previous prime is 53138873677. The next prime is 53138873729. The reversal of 53138873694 is 49637883135.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233065122 + ... + 233065349.

It is an arithmetic number, because the mean of its divisors is an integer number (6991957080).

Almost surely, 2^53138873694 is an apocalyptic number.

53138873694 is an abundant number, since it is smaller than the sum of its proper divisors (58732439586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53138873694 is a wasteful number, since it uses less digits than its factorization.

53138873694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466130495.

The product of its digits is 13063680, while the sum is 57.

The spelling of 53138873694 in words is "fifty-three billion, one hundred thirty-eight million, eight hundred seventy-three thousand, six hundred ninety-four".