1397430559880 has 128 divisors (see below), whose sum is σ = 3349019520000. Its totient is φ = 522960261120.

The previous prime is 1397430559873. The next prime is 1397430559927. The reversal of 1397430559880 is 889550347931.

It is a super-2 number, since 2×1397430559880² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166574726 + ... + 166583114.

It is an arithmetic number, because the mean of its divisors is an integer number (26164215000).

Almost surely, 2^{1397430559880} is an apocalyptic number.

1397430559880 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 1397430559880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1674509760000).

1397430559880 is an abundant number, since it is smaller than the sum of its proper divisors (1951588960120).

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

1397430559880 is a wasteful number, since it uses less digits than its factorization.

1397430559880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9847 (or 9843 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 1397430559880 in words is "one trillion, three hundred ninety-seven billion, four hundred thirty million, five hundred fifty-nine thousand, eight hundred eighty".