1380131809056 has 768 divisors, whose sum is σ = 5457537146880. Its totient is φ = 327666954240.

The previous prime is 1380131809031. The next prime is 1380131809127. The reversal of 1380131809056 is 6509081310831.

It is a happy number.

1380131809056 is a `hidden beast` number, since 1 + 380 + 1 + 3 + 180 + 90 + 5 + 6 = 666.

It is a super-2 number, since 2×1380131809056² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 89073246 + ... + 89088738.

It is an arithmetic number, because the mean of its divisors is an integer number (7106168160).

Almost surely, 2^{1380131809056} is an apocalyptic number.

1380131809056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380131809056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2728768573440).

1380131809056 is an abundant number, since it is smaller than the sum of its proper divisors (4077405337824).

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

1380131809056 is a wasteful number, since it uses less digits than its factorization.

1380131809056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15646 (or 15632 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 1380131809056 in words is "one trillion, three hundred eighty billion, one hundred thirty-one million, eight hundred nine thousand, fifty-six".