1915689655344 has 20 divisors (see below), whose sum is σ = 4948864943096. Its totient is φ = 638563218432.

The previous prime is 1915689655273. The next prime is 1915689655349. The reversal of 1915689655344 is 4435569865191.

It is not an unprimeable number, because it can be changed into a prime (1915689655349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19955100529 + ... + 19955100624.

Almost surely, 2^{1915689655344} is an apocalyptic number.

It is an amenable number.

1915689655344 is an abundant number, since it is smaller than the sum of its proper divisors (3033175287752).

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

1915689655344 is a wasteful number, since it uses less digits than its factorization.

1915689655344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39910201164 (or 39910201158 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 66.

The spelling of 1915689655344 in words is "one trillion, nine hundred fifteen billion, six hundred eighty-nine million, six hundred fifty-five thousand, three hundred forty-four".