56666140650 has 576 divisors, whose sum is σ = 190327104000. Its totient is φ = 12345177600.

The previous prime is 56666140567. The next prime is 56666140667. The reversal of 56666140650 is 5604166665.

It is a super-2 number, since 2×56666140650² (a number of 22 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 56666140596 and 56666140605.

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 287 ways as a sum of consecutive naturals, for example, 209100015 + ... + 209100285.

It is an arithmetic number, because the mean of its divisors is an integer number (330429000).

Almost surely, 2^56666140650 is an apocalyptic number.

56666140650 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 56666140650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95163552000).

56666140650 is an abundant number, since it is smaller than the sum of its proper divisors (133660963350).

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

56666140650 is a wasteful number, since it uses less digits than its factorization.

56666140650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 56666140650 in words is "fifty-six billion, six hundred sixty-six million, one hundred forty thousand, six hundred fifty".