2111665749712 has 80 divisors (see below), whose sum is σ = 4338619310592. Its totient is φ = 992212807680.

The previous prime is 2111665749671. The next prime is 2111665749779. The reversal of 2111665749712 is 2179475661112.

It is a self number, because there is not a number n which added to its sum of digits gives 2111665749712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925762012 + ... + 925764292.

Almost surely, 2^{2111665749712} is an apocalyptic number.

It is an amenable number.

2111665749712 is an abundant number, since it is smaller than the sum of its proper divisors (2226953560880).

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

2111665749712 is a wasteful number, since it uses less digits than its factorization.

2111665749712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996 (or 5990 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The spelling of 2111665749712 in words is "two trillion, one hundred eleven billion, six hundred sixty-five million, seven hundred forty-nine thousand, seven hundred twelve".