501666610050 has 72 divisors (see below), whose sum is σ = 1379155453104. Its totient is φ = 130666646880.

The previous prime is 501666610021. The next prime is 501666610051. The reversal of 501666610050 is 50016666105.

It is a super-2 number, since 2×501666610050² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 501666609987 and 501666610014.

It is not an unprimeable number, because it can be changed into a prime (501666610051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12943612 + ... + 12982311.

Almost surely, 2^501666610050 is an apocalyptic number.

501666610050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

501666610050 is an abundant number, since it is smaller than the sum of its proper divisors (877488843054).

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

501666610050 is a wasteful number, since it uses less digits than its factorization.

501666610050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25925984 (or 25925976 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 501666610050 in words is "five hundred one billion, six hundred sixty-six million, six hundred ten thousand, fifty".