501406215452156 has 24 divisors (see below), whose sum is σ = 1002813210338016. Its totient is φ = 214888211029440.

The previous prime is 501406215452123. The next prime is 501406215452171. The reversal of 501406215452156 is 651254512604105.

It is a self number, because there is not a number n which added to its sum of digits gives 501406215452156.

It is a congruent number.

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, 33921770 + ... + 46405806.

It is an arithmetic number, because the mean of its divisors is an integer number (41783883764084).

Almost surely, 2^{501406215452156} is an apocalyptic number.

It is an amenable number.

501406215452156 is an abundant number, since it is smaller than the sum of its proper divisors (501406994885860).

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

501406215452156 is a wasteful number, since it uses less digits than its factorization.

501406215452156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13918469 (or 13918467 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 501406215452156 in words is "five hundred one trillion, four hundred six billion, two hundred fifteen million, four hundred fifty-two thousand, one hundred fifty-six".