1111142637680 has 20 divisors (see below), whose sum is σ = 2583406632792. Its totient is φ = 444457055040.

The previous prime is 1111142637623. The next prime is 1111142637719. The reversal of 1111142637680 is 867362411111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1111142637680² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6944641406 + ... + 6944641565.

Almost surely, 2^{1111142637680} is an apocalyptic number.

1111142637680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111142637680 is an abundant number, since it is smaller than the sum of its proper divisors (1472263995112).

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

1111142637680 is a wasteful number, since it uses less digits than its factorization.

1111142637680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13889282984 (or 13889282978 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 1111142637680 in words is "one trillion, one hundred eleven billion, one hundred forty-two million, six hundred thirty-seven thousand, six hundred eighty".