1396944811872 has 96 divisors (see below), whose sum is σ = 4123512005760. Its totient is φ = 460038026880.

The previous prime is 1396944811861. The next prime is 1396944811891. The reversal of 1396944811872 is 2781184496931.

1396944811872 is a `hidden beast` number, since 1 + 3 + 9 + 6 + 9 + 448 + 1 + 187 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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, 9668254 + ... + 9811677.

It is an arithmetic number, because the mean of its divisors is an integer number (42953250060).

Almost surely, 2^{1396944811872} is an apocalyptic number.

1396944811872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1396944811872 is an abundant number, since it is smaller than the sum of its proper divisors (2726567193888).

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

1396944811872 is a wasteful number, since it uses less digits than its factorization.

1396944811872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19480033 (or 19480019 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 1396944811872 in words is "one trillion, three hundred ninety-six billion, nine hundred forty-four million, eight hundred eleven thousand, eight hundred seventy-two".