1399750374256 has 40 divisors (see below), whose sum is σ = 2938121885664. Its totient is φ = 642170123520.

The previous prime is 1399750374233. The next prime is 1399750374259. The reversal of 1399750374256 is 6524730579931.

It is a super-2 number, since 2×1399750374256² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1399750374194 and 1399750374203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399750374259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20113675 + ... + 20183146.

Almost surely, 2^{1399750374256} is an apocalyptic number.

1399750374256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1399750374256 is an abundant number, since it is smaller than the sum of its proper divisors (1538371511408).

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

1399750374256 is a wasteful number, since it uses less digits than its factorization.

1399750374256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40297009 (or 40297003 counting only the distinct ones).

The product of its (nonzero) digits is 42865200, while the sum is 61.

The spelling of 1399750374256 in words is "one trillion, three hundred ninety-nine billion, seven hundred fifty million, three hundred seventy-four thousand, two hundred fifty-six".