12498659665 has 16 divisors (see below), whose sum is σ = 15083107200. Its totient is φ = 9942514560.

The previous prime is 12498659659. The next prime is 12498659671. The reversal of 12498659665 is 56695689421.

It is an interprime number because it is at equal distance from previous prime (12498659659) and next prime (12498659671).

It is not a de Polignac number, because 12498659665 - 2¹⁷ = 12498528593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2266842 + ... + 2272348.

It is an arithmetic number, because the mean of its divisors is an integer number (942694200).

Almost surely, 2^12498659665 is an apocalyptic number.

It is an amenable number.

12498659665 is a deficient number, since it is larger than the sum of its proper divisors (2584447535).

12498659665 is a wasteful number, since it uses less digits than its factorization.

12498659665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992.

The product of its digits is 27993600, while the sum is 61.

The spelling of 12498659665 in words is "twelve billion, four hundred ninety-eight million, six hundred fifty-nine thousand, six hundred sixty-five".