52537517664 has 48 divisors (see below), whose sum is σ = 138222407232. Its totient is φ = 17472960128.

The previous prime is 52537517663. The next prime is 52537517713. The reversal of 52537517664 is 46671573525.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×52537517664² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52537517663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575154 + ... + 660209.

It is an arithmetic number, because the mean of its divisors is an integer number (2879633484).

Almost surely, 2^52537517664 is an apocalyptic number.

It is an amenable number.

52537517664 is an abundant number, since it is smaller than the sum of its proper divisors (85684889568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52537517664 is a wasteful number, since it uses less digits than its factorization.

52537517664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235819 (or 1235811 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 51.

The spelling of 52537517664 in words is "fifty-two billion, five hundred thirty-seven million, five hundred seventeen thousand, six hundred sixty-four".