56615327776 has 96 divisors (see below), whose sum is σ = 131754470400. Its totient is φ = 23434444800.

The previous prime is 56615327723. The next prime is 56615327803. The reversal of 56615327776 is 67772351665.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3610000 + ... + 3625648.

It is an arithmetic number, because the mean of its divisors is an integer number (1372442400).

Almost surely, 2^56615327776 is an apocalyptic number.

56615327776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56615327776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65877235200).

56615327776 is an abundant number, since it is smaller than the sum of its proper divisors (75139142624).

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

56615327776 is a wasteful number, since it uses less digits than its factorization.

56615327776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16218 (or 16210 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 55.

The spelling of 56615327776 in words is "fifty-six billion, six hundred fifteen million, three hundred twenty-seven thousand, seven hundred seventy-six".