1399497338688 has 112 divisors (see below), whose sum is σ = 3931760528640. Its totient is φ = 437813837824.

The previous prime is 1399497338683. The next prime is 1399497338693. The reversal of 1399497338688 is 8868337949931.

It is an interprime number because it is at equal distance from previous prime (1399497338683) and next prime (1399497338693).

It is a super-2 number, since 2×1399497338688² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399497338683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544873 + ... + 1759511.

It is an arithmetic number, because the mean of its divisors is an integer number (35105004720).

Almost surely, 2^{1399497338688} 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 1399497338688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965880264320).

1399497338688 is an abundant number, since it is smaller than the sum of its proper divisors (2532263189952).

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

1399497338688 is a wasteful number, since it uses less digits than its factorization.

1399497338688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215024 (or 1215014 counting only the distinct ones).

The product of its digits is 1693052928, while the sum is 78.

The spelling of 1399497338688 in words is "one trillion, three hundred ninety-nine billion, four hundred ninety-seven million, three hundred thirty-eight thousand, six hundred eighty-eight".