501478874106 has 128 divisors (see below), whose sum is σ = 1176536862720. Its totient is φ = 139541875200.

The previous prime is 501478874087. The next prime is 501478874111. The reversal of 501478874106 is 601478874105.

It is a super-2 number, since 2×501478874106² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 214214496 + ... + 214216836.

It is an arithmetic number, because the mean of its divisors is an integer number (9191694240).

Almost surely, 2^501478874106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501478874106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588268431360).

501478874106 is an abundant number, since it is smaller than the sum of its proper divisors (675057988614).

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

501478874106 is a wasteful number, since it uses less digits than its factorization.

501478874106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180.

The product of its (nonzero) digits is 1505280, while the sum is 51.

Subtracting 501478874106 from its reverse (601478874105), we obtain a palindrome (99999999999).

The spelling of 501478874106 in words is "five hundred one billion, four hundred seventy-eight million, eight hundred seventy-four thousand, one hundred six".