19626125011 has 4 divisors (see below), whose sum is σ = 19651647400. Its totient is φ = 19600602624.

The previous prime is 19626124981. The next prime is 19626125021. The reversal of 19626125011 is 11052162691.

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: 11052162691 = 7211 ⋅1532681.

It is a cyclic number.

It is not a de Polignac number, because 19626125011 - 2⁵ = 19626124979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19626125021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12760041 + ... + 12761578.

It is an arithmetic number, because the mean of its divisors is an integer number (4912911850).

Almost surely, 2^19626125011 is an apocalyptic number.

19626125011 is a deficient number, since it is larger than the sum of its proper divisors (25522389).

19626125011 is an equidigital number, since it uses as much as digits as its factorization.

19626125011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25522388.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 19626125011 in words is "nineteen billion, six hundred twenty-six million, one hundred twenty-five thousand, eleven".