1377785827856 has 40 divisors (see below), whose sum is σ = 2845205645184. Its totient is φ = 644075942400.

The previous prime is 1377785827823. The next prime is 1377785827861. The reversal of 1377785827856 is 6587285877731.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16731740 + ... + 16813883.

Almost surely, 2^{1377785827856} is an apocalyptic number.

1377785827856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1377785827856 is an abundant number, since it is smaller than the sum of its proper divisors (1467419817328).

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

1377785827856 is a wasteful number, since it uses less digits than its factorization.

1377785827856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33545799 (or 33545793 counting only the distinct ones).

The product of its digits is 1106380800, while the sum is 74.

The spelling of 1377785827856 in words is "one trillion, three hundred seventy-seven billion, seven hundred eighty-five million, eight hundred twenty-seven thousand, eight hundred fifty-six".