15128491927 has 2 divisors, whose sum is σ = 15128491928. Its totient is φ = 15128491926.

The previous prime is 15128491871. The next prime is 15128491951. The reversal of 15128491927 is 72919482151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15128491927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15128491997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7564245963 + 7564245964.

It is an arithmetic number, because the mean of its divisors is an integer number (7564245964).

Almost surely, 2^15128491927 is an apocalyptic number.

15128491927 is a deficient number, since it is larger than the sum of its proper divisors (1).

15128491927 is an equidigital number, since it uses as much as digits as its factorization.

15128491927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The spelling of 15128491927 in words is "fifteen billion, one hundred twenty-eight million, four hundred ninety-one thousand, nine hundred twenty-seven".