66535811592 has 16 divisors (see below), whose sum is σ = 166339529040. Its totient is φ = 22178603856.

The previous prime is 66535811519. The next prime is 66535811603. The reversal of 66535811592 is 29511853566.

It is a super-2 number, since 2×66535811592² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1386162718 + ... + 1386162765.

It is an arithmetic number, because the mean of its divisors is an integer number (10396220565).

Almost surely, 2^66535811592 is an apocalyptic number.

It is an amenable number.

66535811592 is an abundant number, since it is smaller than the sum of its proper divisors (99803717448).

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

66535811592 is a wasteful number, since it uses less digits than its factorization.

66535811592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772325492 (or 2772325488 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 51.

The spelling of 66535811592 in words is "sixty-six billion, five hundred thirty-five million, eight hundred eleven thousand, five hundred ninety-two".