504661397878 has 8 divisors (see below), whose sum is σ = 825809560200. Its totient is φ = 229391544480.

The previous prime is 504661397839. The next prime is 504661397879. The reversal of 504661397878 is 878793166405.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504661397879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11469577203 + ... + 11469577246.

It is an arithmetic number, because the mean of its divisors is an integer number (103226195025).

Almost surely, 2^504661397878 is an apocalyptic number.

504661397878 is a deficient number, since it is larger than the sum of its proper divisors (321148162322).

504661397878 is a wasteful number, since it uses less digits than its factorization.

504661397878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22939154462.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 504661397878 in words is "five hundred four billion, six hundred sixty-one million, three hundred ninety-seven thousand, eight hundred seventy-eight".