656989164106602 has 32 divisors (see below), whose sum is σ = 1338706352934720. Its totient is φ = 214892187121920.

The previous prime is 656989164106591. The next prime is 656989164106631. The reversal of 656989164106602 is 206601461989656.

It is a super-2 number, since 2×656989164106602² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2141913903 + ... + 2142220610.

It is an arithmetic number, because the mean of its divisors is an integer number (41834573529210).

Almost surely, 2^{656989164106602} is an apocalyptic number.

656989164106602 is an abundant number, since it is smaller than the sum of its proper divisors (681717188828118).

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

656989164106602 is a wasteful number, since it uses less digits than its factorization.

656989164106602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284134998.

The product of its (nonzero) digits is 201553920, while the sum is 69.

The spelling of 656989164106602 in words is "six hundred fifty-six trillion, nine hundred eighty-nine billion, one hundred sixty-four million, one hundred six thousand, six hundred two".