53501216815 has 24 divisors (see below), whose sum is σ = 66223985040. Its totient is φ = 41481767040.

The previous prime is 53501216809. The next prime is 53501216827. The reversal of 53501216815 is 51861210535.

It is not a de Polignac number, because 53501216815 - 2⁷ = 53501216687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1469107 + ... + 1505083.

It is an arithmetic number, because the mean of its divisors is an integer number (2759332710).

Almost surely, 2^53501216815 is an apocalyptic number.

53501216815 is a deficient number, since it is larger than the sum of its proper divisors (12722768225).

53501216815 is an equidigital number, since it uses as much as digits as its factorization.

53501216815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36183 (or 36112 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 53501216815 in words is "fifty-three billion, five hundred one million, two hundred sixteen thousand, eight hundred fifteen".