504659797278 has 128 divisors (see below), whose sum is σ = 1308088320000. Its totient is φ = 126046876032.

The previous prime is 504659797277. The next prime is 504659797303. The reversal of 504659797278 is 872797956405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504659797277) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36291675 + ... + 36305577.

It is an arithmetic number, because the mean of its divisors is an integer number (10219440000).

Almost surely, 2^504659797278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 504659797278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654044160000).

504659797278 is an abundant number, since it is smaller than the sum of its proper divisors (803428522722).

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

504659797278 is a wasteful number, since it uses less digits than its factorization.

504659797278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17446.

The product of its (nonzero) digits is 266716800, while the sum is 69.

The spelling of 504659797278 in words is "five hundred four billion, six hundred fifty-nine million, seven hundred ninety-seven thousand, two hundred seventy-eight".