506450320656 has 40 divisors (see below), whose sum is σ = 1495234281024. Its totient is φ = 144700091520.

The previous prime is 506450320637. The next prime is 506450320679. The reversal of 506450320656 is 656023054605.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 753645975 + ... + 753646646.

Almost surely, 2^506450320656 is an apocalyptic number.

506450320656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

506450320656 is an abundant number, since it is smaller than the sum of its proper divisors (988783960368).

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

506450320656 is a wasteful number, since it uses less digits than its factorization.

506450320656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507292639 (or 1507292633 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 506450320656 in words is "five hundred six billion, four hundred fifty million, three hundred twenty thousand, six hundred fifty-six".