19612431128136 has 64 divisors (see below), whose sum is σ = 61129655470080. Its totient is φ = 5094137954880.

The previous prime is 19612431128131. The next prime is 19612431128161. The reversal of 19612431128136 is 63182113421691.

It is not an unprimeable number, because it can be changed into a prime (19612431128131) 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, 5306391856 + ... + 5306395551.

It is an arithmetic number, because the mean of its divisors is an integer number (955150866720).

Almost surely, 2^{19612431128136} is an apocalyptic number.

It is an amenable number.

19612431128136 is an abundant number, since it is smaller than the sum of its proper divisors (41517224341944).

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

19612431128136 is a wasteful number, since it uses less digits than its factorization.

19612431128136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612787434 (or 10612787430 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The spelling of 19612431128136 in words is "nineteen trillion, six hundred twelve billion, four hundred thirty-one million, one hundred twenty-eight thousand, one hundred thirty-six".