15081197387 has 2 divisors, whose sum is σ = 15081197388. Its totient is φ = 15081197386.

The previous prime is 15081197279. The next prime is 15081197393. The reversal of 15081197387 is 78379118051.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15081197387 is a prime.

It is not a weakly prime, because it can be changed into another prime (15081199387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7540598693 + 7540598694.

It is an arithmetic number, because the mean of its divisors is an integer number (7540598694).

Almost surely, 2^15081197387 is an apocalyptic number.

15081197387 is a deficient number, since it is larger than the sum of its proper divisors (1).

15081197387 is an equidigital number, since it uses as much as digits as its factorization.

15081197387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 50.

The spelling of 15081197387 in words is "fifteen billion, eighty-one million, one hundred ninety-seven thousand, three hundred eighty-seven".