53657722321 has 16 divisors (see below), whose sum is σ = 61490257920. Its totient is φ = 45867093840.

The previous prime is 53657722267. The next prime is 53657722337. The reversal of 53657722321 is 12322775635.

It is a cyclic number.

It is not a de Polignac number, because 53657722321 - 2⁷ = 53657722193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53657722351) 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, 7315626 + ... + 7322956.

It is an arithmetic number, because the mean of its divisors is an integer number (3843141120).

Almost surely, 2^53657722321 is an apocalyptic number.

It is an amenable number.

53657722321 is a deficient number, since it is larger than the sum of its proper divisors (7832535599).

53657722321 is a wasteful number, since it uses less digits than its factorization.

53657722321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10044.

The product of its digits is 529200, while the sum is 43.

The spelling of 53657722321 in words is "fifty-three billion, six hundred fifty-seven million, seven hundred twenty-two thousand, three hundred twenty-one".