681176476530 has 160 divisors (see below), whose sum is σ = 2025491073408. Its totient is φ = 162871430400.

The previous prime is 681176476529. The next prime is 681176476573. The reversal of 681176476530 is 35674671186.

681176476530 is a `hidden beast` number, since 6 + 8 + 117 + 6 + 476 + 53 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 79 ways as a sum of consecutive naturals, for example, 126795 + ... + 1174065.

Almost surely, 2^681176476530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681176476530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012745536704).

681176476530 is an abundant number, since it is smaller than the sum of its proper divisors (1344314596878).

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

681176476530 is a wasteful number, since it uses less digits than its factorization.

681176476530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047374 (or 1047365 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 681176476530 in words is "six hundred eighty-one billion, one hundred seventy-six million, four hundred seventy-six thousand, five hundred thirty".