19372128669 has 16 divisors (see below), whose sum is σ = 28702268800. Its totient is φ = 12913483968.

The previous prime is 19372128667. The next prime is 19372128707. The reversal of 19372128669 is 96682127391.

It is not a de Polignac number, because 19372128669 - 2¹ = 19372128667 is a prime.

It is a super-2 number, since 2×19372128669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19372128667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304197 + ... + 362325.

It is an arithmetic number, because the mean of its divisors is an integer number (1793891800).

Almost surely, 2^19372128669 is an apocalyptic number.

It is an amenable number.

19372128669 is a deficient number, since it is larger than the sum of its proper divisors (9330140131).

19372128669 is a wasteful number, since it uses less digits than its factorization.

19372128669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70481 (or 70475 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 19372128669 in words is "nineteen billion, three hundred seventy-two million, one hundred twenty-eight thousand, six hundred sixty-nine".