19773126925128 has 48 divisors (see below), whose sum is σ = 55535634270480. Its totient is φ = 6591042307728.

The previous prime is 19773126925109. The next prime is 19773126925129. The reversal of 19773126925128 is 82152962137791.

It is a happy number.

19773126925128 is a `hidden beast` number, since 1 + 9 + 7 + 7 + 3 + 1 + 26 + 92 + 512 + 8 = 666.

It is a super-2 number, since 2×19773126925128² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19773126925129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5085678850 + ... + 5085682737.

It is an arithmetic number, because the mean of its divisors is an integer number (1156992380635).

Almost surely, 2^{19773126925128} is an apocalyptic number.

19773126925128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19773126925128 is an abundant number, since it is smaller than the sum of its proper divisors (35762507345352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19773126925128 is a wasteful number, since it uses less digits than its factorization.

19773126925128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171361608 (or 10171361592 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The spelling of 19773126925128 in words is "nineteen trillion, seven hundred seventy-three billion, one hundred twenty-six million, nine hundred twenty-five thousand, one hundred twenty-eight".