1396808398320 has 640 divisors, whose sum is σ = 4662601574400. Its totient is φ = 345392087040.

The previous prime is 1396808398319. The next prime is 1396808398421. The reversal of 1396808398320 is 238938086931.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 4462646484 + ... + 4462646796.

It is an arithmetic number, because the mean of its divisors is an integer number (7285314960).

Almost surely, 2^{1396808398320} is an apocalyptic number.

1396808398320 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 1396808398320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331300787200).

1396808398320 is an abundant number, since it is smaller than the sum of its proper divisors (3265793176080).

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

1396808398320 is a wasteful number, since it uses less digits than its factorization.

1396808398320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 1396808398320 in words is "one trillion, three hundred ninety-six billion, eight hundred eight million, three hundred ninety-eight thousand, three hundred twenty".