56620247456 has 96 divisors (see below), whose sum is σ = 118261503360. Its totient is φ = 26610011136.

The previous prime is 56620247443. The next prime is 56620247491. The reversal of 56620247456 is 65474202665.

It is a self number, because there is not a number n which added to its sum of digits gives 56620247456.

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, 50689010 + ... + 50690126.

It is an arithmetic number, because the mean of its divisors is an integer number (1231890660).

Almost surely, 2^56620247456 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 56620247456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59130751680).

56620247456 is an abundant number, since it is smaller than the sum of its proper divisors (61641255904).

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

56620247456 is a wasteful number, since it uses less digits than its factorization.

56620247456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 56620247456 in words is "fifty-six billion, six hundred twenty million, two hundred forty-seven thousand, four hundred fifty-six".