15854478113 has 2 divisors, whose sum is σ = 15854478114. Its totient is φ = 15854478112.

The previous prime is 15854478049. The next prime is 15854478119. The reversal of 15854478113 is 31187445851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12920414224 + 2934063889 = 113668^2 + 54167^2 .

It is a cyclic number.

It is not a de Polignac number, because 15854478113 - 2⁶ = 15854478049 is a prime.

It is not a weakly prime, because it can be changed into another prime (15854478119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7927239056 + 7927239057.

It is an arithmetic number, because the mean of its divisors is an integer number (7927239057).

Almost surely, 2^15854478113 is an apocalyptic number.

It is an amenable number.

15854478113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15854478113 is an equidigital number, since it uses as much as digits as its factorization.

15854478113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 47.

The spelling of 15854478113 in words is "fifteen billion, eight hundred fifty-four million, four hundred seventy-eight thousand, one hundred thirteen".