56116667640 has 256 divisors, whose sum is σ = 187209792000. Its totient is φ = 13341818880.

The previous prime is 56116667609. The next prime is 56116667653. The reversal of 56116667640 is 4676661165.

It is a self number, because there is not a number n which added to its sum of digits gives 56116667640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59889252 + ... + 59890188.

It is an arithmetic number, because the mean of its divisors is an integer number (731288250).

Almost surely, 2^56116667640 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 56116667640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93604896000).

56116667640 is an abundant number, since it is smaller than the sum of its proper divisors (131093124360).

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

56116667640 is a wasteful number, since it uses less digits than its factorization.

56116667640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 56116667640 in words is "fifty-six billion, one hundred sixteen million, six hundred sixty-seven thousand, six hundred forty".