19051312641 has 16 divisors (see below), whose sum is σ = 25448068800. Its totient is φ = 12677741568.

The previous prime is 19051312639. The next prime is 19051312649. The reversal of 19051312641 is 14621315091.

It is not a de Polignac number, because 19051312641 - 2¹ = 19051312639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19051312649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4896825 + ... + 4900713.

It is an arithmetic number, because the mean of its divisors is an integer number (1590504300).

Almost surely, 2^19051312641 is an apocalyptic number.

It is an amenable number.

19051312641 is a deficient number, since it is larger than the sum of its proper divisors (6396756159).

19051312641 is a wasteful number, since it uses less digits than its factorization.

19051312641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 19051312641 in words is "nineteen billion, fifty-one million, three hundred twelve thousand, six hundred forty-one".