3656891477156 has 12 divisors (see below), whose sum is σ = 6572521168668. Its totient is φ = 1779028286112.

The previous prime is 3656891477131. The next prime is 3656891477189. The reversal of 3656891477156 is 6517741986563.

It can be written as a sum of positive squares in 2 ways, for example, as 2812275336256 + 844616140900 = 1676984^2 + 919030^2 .

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, 12354362951 + ... + 12354363246.

It is an arithmetic number, because the mean of its divisors is an integer number (547710097389).

Almost surely, 2^{3656891477156} is an apocalyptic number.

It is an amenable number.

3656891477156 is a deficient number, since it is larger than the sum of its proper divisors (2915629691512).

3656891477156 is a wasteful number, since it uses less digits than its factorization.

3656891477156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24708726238 (or 24708726236 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 68.

The spelling of 3656891477156 in words is "three trillion, six hundred fifty-six billion, eight hundred ninety-one million, four hundred seventy-seven thousand, one hundred fifty-six".