747839669656 has 16 divisors (see below), whose sum is σ = 1402217349840. Its totient is φ = 373915043040.

The previous prime is 747839669653. The next prime is 747839669669. The reversal of 747839669656 is 656966938747.

It is a super-2 number, since 2×747839669656² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747839669653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114270 + ... + 1228306.

It is an arithmetic number, because the mean of its divisors is an integer number (87638584365).

Almost surely, 2^747839669656 is an apocalyptic number.

It is an amenable number.

747839669656 is a deficient number, since it is larger than the sum of its proper divisors (654377680184).

747839669656 is a wasteful number, since it uses less digits than its factorization.

747839669656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197954 (or 1197950 counting only the distinct ones).

The product of its digits is 2469035520, while the sum is 76.

The spelling of 747839669656 in words is "seven hundred forty-seven billion, eight hundred thirty-nine million, six hundred sixty-nine thousand, six hundred fifty-six".