1397943445860 has 480 divisors, whose sum is σ = 4934920902912. Its totient is φ = 328690897920.

The previous prime is 1397943445853. The next prime is 1397943445867. The reversal of 1397943445860 is 685443497931.

1397943445860 is a `hidden beast` number, since 1 + 3 + 9 + 7 + 9 + 4 + 3 + 44 + 586 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1397943445853) and next prime (1397943445867).

It is a super-2 number, since 2×1397943445860² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1397943445867) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 455800047 + ... + 455803113.

Almost surely, 2^{1397943445860} is an apocalyptic number.

1397943445860 is a gapful number since it is divisible by the number (10) 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 1397943445860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2467460451456).

1397943445860 is an abundant number, since it is smaller than the sum of its proper divisors (3536977457052).

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

1397943445860 is a wasteful number, since it uses less digits than its factorization.

1397943445860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065 (or 4054 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 1397943445860 in words is "one trillion, three hundred ninety-seven billion, nine hundred forty-three million, four hundred forty-five thousand, eight hundred sixty".