655691196556 has 48 divisors (see below), whose sum is σ = 1279466979840. Its totient is φ = 291518435520.

The previous prime is 655691196553. The next prime is 655691196619.

655691196556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655691196556² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655691196553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509535 + ... + 1253398.

It is an arithmetic number, because the mean of its divisors is an integer number (26655562080).

Almost surely, 2^655691196556 is an apocalyptic number.

It is an amenable number.

655691196556 is a deficient number, since it is larger than the sum of its proper divisors (623775783284).

655691196556 is a wasteful number, since it uses less digits than its factorization.

655691196556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763134 (or 1763132 counting only the distinct ones).

The product of its digits is 65610000, while the sum is 64.

The spelling of 655691196556 in words is "six hundred fifty-five billion, six hundred ninety-one million, one hundred ninety-six thousand, five hundred fifty-six".