655131632694 has 96 divisors (see below), whose sum is σ = 1699046135808. Its totient is φ = 164674857600.

The previous prime is 655131632677. The next prime is 655131632699. The reversal of 655131632694 is 496236131556.

It is a super-2 number, since 2×655131632694² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655131632699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1921687 + ... + 2236770.

It is an arithmetic number, because the mean of its divisors is an integer number (17698397248).

Almost surely, 2^655131632694 is an apocalyptic number.

655131632694 is an abundant number, since it is smaller than the sum of its proper divisors (1043914503114).

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

655131632694 is a wasteful number, since it uses less digits than its factorization.

655131632694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158522 (or 4158511 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 51.

The spelling of 655131632694 in words is "six hundred fifty-five billion, one hundred thirty-one million, six hundred thirty-two thousand, six hundred ninety-four".