504155857913 has 2 divisors, whose sum is σ = 504155857914. Its totient is φ = 504155857912.

The previous prime is 504155857873. The next prime is 504155857957. The reversal of 504155857913 is 319758551405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503967948649 + 187909264 = 709907^2 + 13708^2 .

It is a cyclic number.

It is not a de Polignac number, because 504155857913 - 2²⁶ = 504088749049 is a prime.

It is not a weakly prime, because it can be changed into another prime (504155857993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252077928956 + 252077928957.

It is an arithmetic number, because the mean of its divisors is an integer number (252077928957).

Almost surely, 2^504155857913 is an apocalyptic number.

It is an amenable number.

504155857913 is a deficient number, since it is larger than the sum of its proper divisors (1).

504155857913 is an equidigital number, since it uses as much as digits as its factorization.

504155857913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780000, while the sum is 53.

The spelling of 504155857913 in words is "five hundred four billion, one hundred fifty-five million, eight hundred fifty-seven thousand, nine hundred thirteen".