15149889497 has 2 divisors, whose sum is σ = 15149889498. Its totient is φ = 15149889496.

The previous prime is 15149889479. The next prime is 15149889499. The reversal of 15149889497 is 79498894151.

Together with previous prime (15149889479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15124326361 + 25563136 = 122981^2 + 5056^2 .

It is a cyclic number.

It is not a de Polignac number, because 15149889497 - 2¹⁰ = 15149888473 is a prime.

Together with 15149889499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15149889499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7574944748 + 7574944749.

It is an arithmetic number, because the mean of its divisors is an integer number (7574944749).

Almost surely, 2^15149889497 is an apocalyptic number.

It is an amenable number.

15149889497 is a deficient number, since it is larger than the sum of its proper divisors (1).

15149889497 is an equidigital number, since it uses as much as digits as its factorization.

15149889497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 65.

The spelling of 15149889497 in words is "fifteen billion, one hundred forty-nine million, eight hundred eighty-nine thousand, four hundred ninety-seven".