505189734551172 has 36 divisors (see below), whose sum is σ = 1393098964975536. Its totient is φ = 153087798348720.

The previous prime is 505189734551141. The next prime is 505189734551251. The reversal of 505189734551172 is 271155437981505.

505189734551172 is a `hidden beast` number, since 5 + 0 + 5 + 1 + 8 + 9 + 7 + 3 + 4 + 551 + 1 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637865826058 + ... + 637865826849.

Almost surely, 2^{505189734551172} is an apocalyptic number.

It is an amenable number.

505189734551172 is an abundant number, since it is smaller than the sum of its proper divisors (887909230424364).

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

505189734551172 is a wasteful number, since it uses less digits than its factorization.

505189734551172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275731652928 (or 1275731652923 counting only the distinct ones).

The product of its (nonzero) digits is 52920000, while the sum is 63.

The spelling of 505189734551172 in words is "five hundred five trillion, one hundred eighty-nine billion, seven hundred thirty-four million, five hundred fifty-one thousand, one hundred seventy-two".