8056537640 has 32 divisors (see below), whose sum is σ = 18130101480. Its totient is φ = 3222100992.

The previous prime is 8056537639. The next prime is 8056537651. The reversal of 8056537640 is 467356508.

It can be written as a sum of positive squares in 4 ways, for example, as 6241948036 + 1814589604 = 79006^2 + 42598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8056537591 and 8056537600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329684 + ... + 353276.

Almost surely, 2^8056537640 is an apocalyptic number.

It is an amenable number.

8056537640 is an abundant number, since it is smaller than the sum of its proper divisors (10073563840).

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

8056537640 is a wasteful number, since it uses less digits than its factorization.

8056537640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32141 (or 32137 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 8056537640 is about 89758.2176739267. The cubic root of 8056537640 is about 2004.7004143980.

The spelling of 8056537640 in words is "eight billion, fifty-six million, five hundred thirty-seven thousand, six hundred forty".