1345991701824 has 280 divisors, whose sum is σ = 4974473452608. Its totient is φ = 349608130560.

The previous prime is 1345991701787. The next prime is 1345991701849. The reversal of 1345991701824 is 4281071995431.

1345991701824 is a `hidden beast` number, since 1 + 3 + 4 + 599 + 17 + 0 + 18 + 24 = 666.

It is a super-2 number, since 2×1345991701824² (a number of 25 digits) contains 22 as substring.

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 39 ways as a sum of consecutive naturals, for example, 1286829 + ... + 2085164.

Almost surely, 2^{1345991701824} is an apocalyptic number.

1345991701824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1345991701824 is an abundant number, since it is smaller than the sum of its proper divisors (3628481750784).

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

1345991701824 is a wasteful number, since it uses less digits than its factorization.

1345991701824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372035 (or 3372016 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 1345991701824 in words is "one trillion, three hundred forty-five billion, nine hundred ninety-one million, seven hundred one thousand, eight hundred twenty-four".