53338728957 has 16 divisors (see below), whose sum is σ = 71810598720. Its totient is φ = 35214296832.

The previous prime is 53338728881. The next prime is 53338728959. The reversal of 53338728957 is 75982783335.

It is not a de Polignac number, because 53338728957 - 2¹⁴ = 53338712573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53338728957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53338728959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4453 + ... + 326645.

It is an arithmetic number, because the mean of its divisors is an integer number (4488162420).

Almost surely, 2^53338728957 is an apocalyptic number.

It is an amenable number.

53338728957 is a deficient number, since it is larger than the sum of its proper divisors (18471869763).

53338728957 is a wasteful number, since it uses less digits than its factorization.

53338728957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322732.

The product of its digits is 38102400, while the sum is 60.

The spelling of 53338728957 in words is "fifty-three billion, three hundred thirty-eight million, seven hundred twenty-eight thousand, nine hundred fifty-seven".