15417375121 has 2 divisors, whose sum is σ = 15417375122. Its totient is φ = 15417375120.

The previous prime is 15417375119. The next prime is 15417375131. The reversal of 15417375121 is 12157371451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13558040721 + 1859334400 = 116439^2 + 43120^2 .

It is a cyclic number.

It is not a de Polignac number, because 15417375121 - 2¹ = 15417375119 is a prime.

Together with 15417375119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15417375131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7708687560 + 7708687561.

It is an arithmetic number, because the mean of its divisors is an integer number (7708687561).

Almost surely, 2^15417375121 is an apocalyptic number.

It is an amenable number.

15417375121 is a deficient number, since it is larger than the sum of its proper divisors (1).

15417375121 is an equidigital number, since it uses as much as digits as its factorization.

15417375121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 37.

The spelling of 15417375121 in words is "fifteen billion, four hundred seventeen million, three hundred seventy-five thousand, one hundred twenty-one".