651936948895656 has 96 divisors (see below), whose sum is σ = 1779669563443200. Its totient is φ = 215588578907520.

The previous prime is 651936948895649. The next prime is 651936948895681. The reversal of 651936948895656 is 656598849639156.

651936948895656 is a `hidden beast` number, since 6 + 5 + 1 + 9 + 3 + 69 + 488 + 9 + 5 + 65 + 6 = 666.

651936948895656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154824366 + ... + 158979426.

It is an arithmetic number, because the mean of its divisors is an integer number (18538224619200).

Almost surely, 2^{651936948895656} 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 651936948895656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889834781721600).

651936948895656 is an abundant number, since it is smaller than the sum of its proper divisors (1127732614547544).

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

651936948895656 is a wasteful number, since it uses less digits than its factorization.

651936948895656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4172359 (or 4172352 counting only the distinct ones).

The product of its digits is 90699264000, while the sum is 90.

The spelling of 651936948895656 in words is "six hundred fifty-one trillion, nine hundred thirty-six billion, nine hundred forty-eight million, eight hundred ninety-five thousand, six hundred fifty-six".