656604551630 has 8 divisors (see below), whose sum is σ = 1181888192952. Its totient is φ = 262641820648.

The previous prime is 656604551549. The next prime is 656604551671. The reversal of 656604551630 is 36155406656.

656604551630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×656604551630² (a number of 24 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, 32830227572 + ... + 32830227591.

It is an arithmetic number, because the mean of its divisors is an integer number (147736024119).

Almost surely, 2^656604551630 is an apocalyptic number.

656604551630 is a deficient number, since it is larger than the sum of its proper divisors (525283641322).

656604551630 is a wasteful number, since it uses less digits than its factorization.

656604551630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65660455170.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 656604551630 in words is "six hundred fifty-six billion, six hundred four million, five hundred fifty-one thousand, six hundred thirty".