815927742260 has 12 divisors (see below), whose sum is σ = 1713448258788. Its totient is φ = 326371096896.

The previous prime is 815927742191. The next prime is 815927742293. The reversal of 815927742260 is 62247729518.

It can be written as a sum of positive squares in 2 ways, for example, as 594000069796 + 221927672464 = 770714^2 + 471092^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20398193537 + ... + 20398193576.

It is an arithmetic number, because the mean of its divisors is an integer number (142787354899).

Almost surely, 2^815927742260 is an apocalyptic number.

It is an amenable number.

815927742260 is an abundant number, since it is smaller than the sum of its proper divisors (897520516528).

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

815927742260 is a wasteful number, since it uses less digits than its factorization.

815927742260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40796387122 (or 40796387120 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 815927742260 in words is "eight hundred fifteen billion, nine hundred twenty-seven million, seven hundred forty-two thousand, two hundred sixty".