656665151156 has 48 divisors (see below), whose sum is σ = 1350050935296. Its totient is φ = 273573033984.

The previous prime is 656665151111. The next prime is 656665151213. The reversal of 656665151156 is 651151566656.

It is a junction number, because it is equal to n+sod(n) for n = 656665151098 and 656665151107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855380 + ... + 1430036.

It is an arithmetic number, because the mean of its divisors is an integer number (28126061152).

Almost surely, 2^656665151156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656665151156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675025467648).

656665151156 is an abundant number, since it is smaller than the sum of its proper divisors (693385784140).

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

656665151156 is a wasteful number, since it uses less digits than its factorization.

656665151156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575808 (or 575806 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 53.

The spelling of 656665151156 in words is "six hundred fifty-six billion, six hundred sixty-five million, one hundred fifty-one thousand, one hundred fifty-six".