53594953821 has 12 divisors (see below), whose sum is σ = 77418479580. Its totient is φ = 35728332480.

The previous prime is 53594953801. The next prime is 53594953837. The reversal of 53594953821 is 12835949535.

53594953821 is a `hidden beast` number, since 53 + 59 + 4 + 9 + 538 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34330901796 + 19264052025 = 185286^2 + 138795^2 .

It is not a de Polignac number, because 53594953821 - 2⁷ = 53594953693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53594953801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90931 + ... + 339791.

It is an arithmetic number, because the mean of its divisors is an integer number (6451539965).

Almost surely, 2^53594953821 is an apocalyptic number.

It is an amenable number.

53594953821 is a deficient number, since it is larger than the sum of its proper divisors (23823525759).

53594953821 is a wasteful number, since it uses less digits than its factorization.

53594953821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272796 (or 272793 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The spelling of 53594953821 in words is "fifty-three billion, five hundred ninety-four million, nine hundred fifty-three thousand, eight hundred twenty-one".