505656315277640 has 32 divisors (see below), whose sum is σ = 1138459308812280. Its totient is φ = 202132286211072.

The previous prime is 505656315277639. The next prime is 505656315277651. The reversal of 505656315277640 is 46772513656505.

It can be written as a sum of positive squares in 4 ways, for example, as 284332912006276 + 221323403271364 = 16862174^2 + 14876942^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4069933979 + ... + 4070058218.

Almost surely, 2^{505656315277640} is an apocalyptic number.

It is an amenable number.

505656315277640 is an abundant number, since it is smaller than the sum of its proper divisors (632802993534640).

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

505656315277640 is a wasteful number, since it uses less digits than its factorization.

505656315277640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139993761 (or 8139993757 counting only the distinct ones).

The product of its (nonzero) digits is 158760000, while the sum is 62.

The spelling of 505656315277640 in words is "five hundred five trillion, six hundred fifty-six billion, three hundred fifteen million, two hundred seventy-seven thousand, six hundred forty".