1339971655680 has 576 divisors, whose sum is σ = 5540898636000. Its totient is φ = 306276139008.

The previous prime is 1339971655663. The next prime is 1339971655681. The reversal of 1339971655680 is 865561799331.

1339971655680 is a `hidden beast` number, since 1 + 3 + 3 + 9 + 9 + 7 + 1 + 65 + 568 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339971655681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13498066 + ... + 13596974.

Almost surely, 2^{1339971655680} is an apocalyptic number.

1339971655680 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 1339971655680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2770449318000).

1339971655680 is an abundant number, since it is smaller than the sum of its proper divisors (4200926980320).

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

1339971655680 is an equidigital number, since it uses as much as digits as its factorization.

1339971655680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98959 (or 98926 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 1339971655680 in words is "one trillion, three hundred thirty-nine billion, nine hundred seventy-one million, six hundred fifty-five thousand, six hundred eighty".