1381011656684 has 48 divisors (see below), whose sum is σ = 2814326726400. Its totient is φ = 586318017600.

The previous prime is 1381011656657. The next prime is 1381011656707. The reversal of 1381011656684 is 4866561101831.

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, 11573939 + ... + 11692650.

It is an arithmetic number, because the mean of its divisors is an integer number (58631806800).

Almost surely, 2^{1381011656684} is an apocalyptic number.

It is an amenable number.

1381011656684 is an abundant number, since it is smaller than the sum of its proper divisors (1433315069716).

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

1381011656684 is a wasteful number, since it uses less digits than its factorization.

1381011656684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23266694 (or 23266692 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 1381011656684 in words is "one trillion, three hundred eighty-one billion, eleven million, six hundred fifty-six thousand, six hundred eighty-four".