656453446601552 has 20 divisors (see below), whose sum is σ = 1271879078960916. Its totient is φ = 328226587514880.

The previous prime is 656453446601543. The next prime is 656453446601639. The reversal of 656453446601552 is 255106644354656.

It can be written as a sum of positive squares in 2 ways, for example, as 130260129880336 + 526193316721216 = 11413156^2 + 22938904^2 .

It is a super-2 number, since 2×656453446601552² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 39682838 + ... + 53736714.

Almost surely, 2^{656453446601552} is an apocalyptic number.

It is an amenable number.

656453446601552 is a deficient number, since it is larger than the sum of its proper divisors (615425632359364).

656453446601552 is a wasteful number, since it uses less digits than its factorization.

656453446601552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16973246 (or 16973240 counting only the distinct ones).

The product of its (nonzero) digits is 311040000, while the sum is 62.

The spelling of 656453446601552 in words is "six hundred fifty-six trillion, four hundred fifty-three billion, four hundred forty-six million, six hundred one thousand, five hundred fifty-two".