56651216526 has 48 divisors (see below), whose sum is σ = 124824163776. Its totient is φ = 18565417728.

The previous prime is 56651216513. The next prime is 56651216597. The reversal of 56651216526 is 62561215665.

56651216526 is a `hidden beast` number, since 5 + 66 + 51 + 2 + 16 + 526 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342411 + ... + 480153.

It is an arithmetic number, because the mean of its divisors is an integer number (2600503412).

Almost surely, 2^56651216526 is an apocalyptic number.

56651216526 is an abundant number, since it is smaller than the sum of its proper divisors (68172947250).

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

56651216526 is a wasteful number, since it uses less digits than its factorization.

56651216526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138137 (or 138134 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 56651216526 in words is "fifty-six billion, six hundred fifty-one million, two hundred sixteen thousand, five hundred twenty-six".