53216318953891 has 2 divisors, whose sum is σ = 53216318953892. Its totient is φ = 53216318953890.

The previous prime is 53216318953801. The next prime is 53216318953951. The reversal of 53216318953891 is 19835981361235.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53216318953891 - 2²³ = 53216310565283 is a prime.

It is a pancake number, because a pancake can be divided into 53216318953891 parts by 10316619 straight cuts.

It is not a weakly prime, because it can be changed into another prime (53216318953801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26608159476945 + 26608159476946.

It is an arithmetic number, because the mean of its divisors is an integer number (26608159476946).

Almost surely, 2^{53216318953891} is an apocalyptic number.

53216318953891 is the 4613733-rd centered pentagonal number.

53216318953891 is a deficient number, since it is larger than the sum of its proper divisors (1).

53216318953891 is an equidigital number, since it uses as much as digits as its factorization.

53216318953891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41990400, while the sum is 64.

The spelling of 53216318953891 in words is "fifty-three trillion, two hundred sixteen billion, three hundred eighteen million, nine hundred fifty-three thousand, eight hundred ninety-one".