815740072103 has 16 divisors (see below), whose sum is σ = 908767987200. Its totient is φ = 725962298880.

The previous prime is 815740072097. The next prime is 815740072141. The reversal of 815740072103 is 301270047518.

It is a cyclic number.

It is not a de Polignac number, because 815740072103 - 2⁸ = 815740071847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815740072183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2474426 + ... + 2784647.

It is an arithmetic number, because the mean of its divisors is an integer number (56797999200).

Almost surely, 2^815740072103 is an apocalyptic number.

815740072103 is a deficient number, since it is larger than the sum of its proper divisors (93027915097).

815740072103 is a wasteful number, since it uses less digits than its factorization.

815740072103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259382.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 815740072103 in words is "eight hundred fifteen billion, seven hundred forty million, seventy-two thousand, one hundred three".