1368139571568 has 960 divisors, whose sum is σ = 5257596825600. Its totient is φ = 332461324800.

The previous prime is 1368139571567. The next prime is 1368139571573. The reversal of 1368139571568 is 8651759318631.

1368139571568 is a `hidden beast` number, since 1 + 3 + 6 + 8 + 1 + 3 + 9 + 571 + 56 + 8 = 666.

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 (1368139571567) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 577029423 + ... + 577031793.

It is an arithmetic number, because the mean of its divisors is an integer number (5476663360).

Almost surely, 2^{1368139571568} is an apocalyptic number.

1368139571568 is a gapful number since it is divisible by the number (18) 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 1368139571568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2628798412800).

1368139571568 is an abundant number, since it is smaller than the sum of its proper divisors (3889457254032).

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

1368139571568 is a wasteful number, since it uses less digits than its factorization.

1368139571568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519 (or 2496 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 63.

The spelling of 1368139571568 in words is "one trillion, three hundred sixty-eight billion, one hundred thirty-nine million, five hundred seventy-one thousand, five hundred sixty-eight".