15123004979 has 2 divisors, whose sum is σ = 15123004980. Its totient is φ = 15123004978.

The previous prime is 15123004969. The next prime is 15123005071. The reversal of 15123004979 is 97940032151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15123004979 is a prime.

It is not a weakly prime, because it can be changed into another prime (15123004969) 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, 7561502489 + 7561502490.

It is an arithmetic number, because the mean of its divisors is an integer number (7561502490).

Almost surely, 2^15123004979 is an apocalyptic number.

15123004979 is a deficient number, since it is larger than the sum of its proper divisors (1).

15123004979 is an equidigital number, since it uses as much as digits as its factorization.

15123004979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 15123004979 in words is "fifteen billion, one hundred twenty-three million, four thousand, nine hundred seventy-nine".