53216605065 has 64 divisors (see below), whose sum is σ = 92410053120. Its totient is φ = 25995755520.

The previous prime is 53216605037. The next prime is 53216605073. The reversal of 53216605065 is 56050661235.

It is not a de Polignac number, because 53216605065 - 2⁵ = 53216605033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16520155 + ... + 16523375.

It is an arithmetic number, because the mean of its divisors is an integer number (1443907080).

Almost surely, 2^53216605065 is an apocalyptic number.

It is an amenable number.

53216605065 is a deficient number, since it is larger than the sum of its proper divisors (39193448055).

53216605065 is a wasteful number, since it uses less digits than its factorization.

53216605065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 53216605065 in words is "fifty-three billion, two hundred sixteen million, six hundred five thousand, sixty-five".