15996651503617 has 8 divisors (see below), whose sum is σ = 16347593684736. Its totient is φ = 15646150484832.

The previous prime is 15996651503603. The next prime is 15996651503639. The reversal of 15996651503617 is 71630515669951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15996651503617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15996651506617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110217268 + ... + 110362309.

It is an arithmetic number, because the mean of its divisors is an integer number (2043449210592).

Almost surely, 2^{15996651503617} is an apocalyptic number.

It is an amenable number.

15996651503617 is a deficient number, since it is larger than the sum of its proper divisors (350942181119).

15996651503617 is a wasteful number, since it uses less digits than its factorization.

15996651503617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220581167.

The product of its (nonzero) digits is 45927000, while the sum is 64.

The spelling of 15996651503617 in words is "fifteen trillion, nine hundred ninety-six billion, six hundred fifty-one million, five hundred three thousand, six hundred seventeen".