507581438636820 has 96 divisors (see below), whose sum is σ = 1421971655731200. Its totient is φ = 135284233048704.

The previous prime is 507581438636819. The next prime is 507581438636879. The reversal of 507581438636820 is 28636834185705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5654387577 + ... + 5654477343.

It is an arithmetic number, because the mean of its divisors is an integer number (14812204747200).

Almost surely, 2^{507581438636820} is an apocalyptic number.

It is an amenable number.

507581438636820 is an abundant number, since it is smaller than the sum of its proper divisors (914390217094380).

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

507581438636820 is a wasteful number, since it uses less digits than its factorization.

507581438636820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138037 (or 138035 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 66.

The spelling of 507581438636820 in words is "five hundred seven trillion, five hundred eighty-one billion, four hundred thirty-eight million, six hundred thirty-six thousand, eight hundred twenty".