15015140923 has 2 divisors, whose sum is σ = 15015140924. Its totient is φ = 15015140922.

The previous prime is 15015140897. The next prime is 15015140939. The reversal of 15015140923 is 32904151051.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15015140923 is a prime.

It is not a weakly prime, because it can be changed into another prime (15015140993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7507570461 + 7507570462.

It is an arithmetic number, because the mean of its divisors is an integer number (7507570462).

Almost surely, 2^15015140923 is an apocalyptic number.

15015140923 is a deficient number, since it is larger than the sum of its proper divisors (1).

15015140923 is an equidigital number, since it uses as much as digits as its factorization.

15015140923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

Adding to 15015140923 its reverse (32904151051), we get a palindrome (47919291974).

The spelling of 15015140923 in words is "fifteen billion, fifteen million, one hundred forty thousand, nine hundred twenty-three".