505252679278 has 16 divisors (see below), whose sum is σ = 785987657280. Its totient is φ = 243300679776.

The previous prime is 505252679273. The next prime is 505252679291. The reversal of 505252679278 is 872976252505.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505252679273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10948326 + ... + 10994377.

It is an arithmetic number, because the mean of its divisors is an integer number (49124228580).

Almost surely, 2^505252679278 is an apocalyptic number.

505252679278 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

505252679278 is a deficient number, since it is larger than the sum of its proper divisors (280734978002).

505252679278 is a wasteful number, since it uses less digits than its factorization.

505252679278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21943131.

The product of its (nonzero) digits is 21168000, while the sum is 58.

The spelling of 505252679278 in words is "five hundred five billion, two hundred fifty-two million, six hundred seventy-nine thousand, two hundred seventy-eight".