56615056650 has 432 divisors, whose sum is σ = 172374949440. Its totient is φ = 13659840000.

The previous prime is 56615056639. The next prime is 56615056661. The reversal of 56615056650 is 5665051665.

It is an interprime number because it is at equal distance from previous prime (56615056639) and next prime (56615056661).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56615056596 and 56615056605.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 374934075 + ... + 374934225.

Almost surely, 2^56615056650 is an apocalyptic number.

56615056650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56615056650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86187474720).

56615056650 is an abundant number, since it is smaller than the sum of its proper divisors (115759892790).

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

56615056650 is a wasteful number, since it uses less digits than its factorization.

56615056650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 56615056650 in words is "fifty-six billion, six hundred fifteen million, fifty-six thousand, six hundred fifty".