1368345621408 has 24 divisors (see below), whose sum is σ = 3591907256448. Its totient is φ = 456115207104.

The previous prime is 1368345621407. The next prime is 1368345621439. The reversal of 1368345621408 is 8041265438631.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (1368345621403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7126800016 + ... + 7126800207.

It is an arithmetic number, because the mean of its divisors is an integer number (149662802352).

Almost surely, 2^{1368345621408} is an apocalyptic number.

It is an amenable number.

1368345621408 is an abundant number, since it is smaller than the sum of its proper divisors (2223561635040).

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

1368345621408 is a wasteful number, since it uses less digits than its factorization.

1368345621408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253600236 (or 14253600228 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 1368345621408 in words is "one trillion, three hundred sixty-eight billion, three hundred forty-five million, six hundred twenty-one thousand, four hundred eight".