1368777869520 has 160 divisors (see below), whose sum is σ = 4392624211200. Its totient is φ = 352172470272.

The previous prime is 1368777869479. The next prime is 1368777869531. The reversal of 1368777869520 is 259687778631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9905061 + ... + 10042299.

It is an arithmetic number, because the mean of its divisors is an integer number (27453901320).

Almost surely, 2^{1368777869520} is an apocalyptic number.

1368777869520 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 1368777869520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196312105600).

1368777869520 is an abundant number, since it is smaller than the sum of its proper divisors (3023846341680).

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

1368777869520 is a wasteful number, since it uses less digits than its factorization.

1368777869520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138717 (or 138711 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 69.

The spelling of 1368777869520 in words is "one trillion, three hundred sixty-eight billion, seven hundred seventy-seven million, eight hundred sixty-nine thousand, five hundred twenty".