1397131752384 has 168 divisors, whose sum is σ = 4128165419040. Its totient is φ = 451437484032.

The previous prime is 1397131752301. The next prime is 1397131752389. The reversal of 1397131752384 is 4832571317931.

1397131752384 is a `hidden beast` number, since 1 + 3 + 9 + 7 + 1 + 31 + 7 + 523 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1397131752384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397131752389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5611077 + ... + 5854779.

Almost surely, 2^{1397131752384} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397131752384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2064082709520).

1397131752384 is an abundant number, since it is smaller than the sum of its proper divisors (2731033666656).

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

1397131752384 is a wasteful number, since it uses less digits than its factorization.

1397131752384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244027 (or 244014 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 1397131752384 in words is "one trillion, three hundred ninety-seven billion, one hundred thirty-one million, seven hundred fifty-two thousand, three hundred eighty-four".