1399116644352 has 720 divisors, whose sum is σ = 4874689444352. Its totient is φ = 392716615680.

The previous prime is 1399116644339. The next prime is 1399116644369. The reversal of 1399116644352 is 2534466119931.

1399116644352 is a `hidden beast` number, since 1 + 3 + 9 + 91 + 1 + 66 + 443 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1700019813 + ... + 1700020635.

Almost surely, 2^{1399116644352} is an apocalyptic number.

1399116644352 is a gapful number since it is divisible by the number (12) 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 1399116644352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437344722176).

1399116644352 is an abundant number, since it is smaller than the sum of its proper divisors (3475572800000).

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

1399116644352 is an frugal number, since it uses more digits than its factorization.

1399116644352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 896 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 1399116644352 in words is "one trillion, three hundred ninety-nine billion, one hundred sixteen million, six hundred forty-four thousand, three hundred fifty-two".