12892819691 has 4 divisors (see below), whose sum is σ = 13048154952. Its totient is φ = 12737484432.

The previous prime is 12892819649. The next prime is 12892819729. The reversal of 12892819691 is 19691829821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19691829821 = 2917 ⋅6750713.

It is a cyclic number.

It is not a de Polignac number, because 12892819691 - 2¹⁴ = 12892803307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12892819631) 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, 77667506 + ... + 77667671.

It is an arithmetic number, because the mean of its divisors is an integer number (3262038738).

Almost surely, 2^12892819691 is an apocalyptic number.

12892819691 is a deficient number, since it is larger than the sum of its proper divisors (155335261).

12892819691 is an equidigital number, since it uses as much as digits as its factorization.

12892819691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155335260.

The product of its digits is 1119744, while the sum is 56.

The spelling of 12892819691 in words is "twelve billion, eight hundred ninety-two million, eight hundred nineteen thousand, six hundred ninety-one".