15250536497 has 4 divisors (see below), whose sum is σ = 17429184576. Its totient is φ = 13071888420.

The previous prime is 15250536493. The next prime is 15250536503. The reversal of 15250536497 is 79463505251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79463505251 = 13 ⋅6112577327.

It is a cyclic number.

It is not a de Polignac number, because 15250536497 - 2² = 15250536493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15250536491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089324029 + ... + 1089324042.

It is an arithmetic number, because the mean of its divisors is an integer number (4357296144).

Almost surely, 2^15250536497 is an apocalyptic number.

It is an amenable number.

15250536497 is a deficient number, since it is larger than the sum of its proper divisors (2178648079).

15250536497 is an equidigital number, since it uses as much as digits as its factorization.

15250536497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178648078.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 15250536497 in words is "fifteen billion, two hundred fifty million, five hundred thirty-six thousand, four hundred ninety-seven".