815457925558103 has 2 divisors, whose sum is σ = 815457925558104. Its totient is φ = 815457925558102.

The previous prime is 815457925558069. The next prime is 815457925558127. The reversal of 815457925558103 is 301855529754518.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-815457925558103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815457925558603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407728962779051 + 407728962779052.

It is an arithmetic number, because the mean of its divisors is an integer number (407728962779052).

Almost surely, 2^{815457925558103} is an apocalyptic number.

815457925558103 is a deficient number, since it is larger than the sum of its proper divisors (1).

815457925558103 is an equidigital number, since it uses as much as digits as its factorization.

815457925558103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400000, while the sum is 68.

The spelling of 815457925558103 in words is "eight hundred fifteen trillion, four hundred fifty-seven billion, nine hundred twenty-five million, five hundred fifty-eight thousand, one hundred three".