19600968251 has 4 divisors (see below), whose sum is σ = 19601498400. Its totient is φ = 19600438104.

The previous prime is 19600968239. The next prime is 19600968301. The reversal of 19600968251 is 15286900691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15286900691 = 113 ⋅135282307.

It is a cyclic number.

It is not a de Polignac number, because 19600968251 - 2¹⁸ = 19600706107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19600968196 and 19600968205.

It is not an unprimeable number, because it can be changed into a prime (19600968221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205091 + ... + 285068.

It is an arithmetic number, because the mean of its divisors is an integer number (4900374600).

Almost surely, 2^19600968251 is an apocalyptic number.

19600968251 is a deficient number, since it is larger than the sum of its proper divisors (530149).

19600968251 is an equidigital number, since it uses as much as digits as its factorization.

19600968251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530148.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 19600968251 in words is "nineteen billion, six hundred million, nine hundred sixty-eight thousand, two hundred fifty-one".