500394977451 has 80 divisors (see below), whose sum is σ = 764315639296. Its totient is φ = 326179047744.

The previous prime is 500394977449. The next prime is 500394977461. The reversal of 500394977451 is 154779493005.

500394977451 is a `hidden beast` number, since 5 + 0 + 0 + 39 + 497 + 74 + 51 = 666.

It is not a de Polignac number, because 500394977451 - 2¹ = 500394977449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500394977461) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 551702940 + ... + 551703846.

Almost surely, 2^500394977451 is an apocalyptic number.

500394977451 is a deficient number, since it is larger than the sum of its proper divisors (263920661845).

500394977451 is a wasteful number, since it uses less digits than its factorization.

500394977451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 500394977451 in words is "five hundred billion, three hundred ninety-four million, nine hundred seventy-seven thousand, four hundred fifty-one".