15400940179 has 2 divisors, whose sum is σ = 15400940180. Its totient is φ = 15400940178.

The previous prime is 15400940153. The next prime is 15400940189. The reversal of 15400940179 is 97104900451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15400940179 - 2⁹ = 15400939667 is a prime.

It is not a weakly prime, because it can be changed into another prime (15400940189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7700470089 + 7700470090.

It is an arithmetic number, because the mean of its divisors is an integer number (7700470090).

Almost surely, 2^15400940179 is an apocalyptic number.

15400940179 is a deficient number, since it is larger than the sum of its proper divisors (1).

15400940179 is an equidigital number, since it uses as much as digits as its factorization.

15400940179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 15400940179 in words is "fifteen billion, four hundred million, nine hundred forty thousand, one hundred seventy-nine".