1368161437920 has 192 divisors, whose sum is σ = 4427453411136. Its totient is φ = 354880880640.

The previous prime is 1368161437913. The next prime is 1368161437921. The reversal of 1368161437920 is 297341618631.

It is a super-2 number, since 2×1368161437920² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368161437921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77371480 + ... + 77389160.

It is an arithmetic number, because the mean of its divisors is an integer number (23059653183).

Almost surely, 2^{1368161437920} is an apocalyptic number.

1368161437920 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 1368161437920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2213726705568).

1368161437920 is an abundant number, since it is smaller than the sum of its proper divisors (3059291973216).

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

1368161437920 is a wasteful number, since it uses less digits than its factorization.

1368161437920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22093 (or 22085 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

It can be divided in two parts, 1368161 and 437920, that added together give a palindrome (1806081).

The spelling of 1368161437920 in words is "one trillion, three hundred sixty-eight billion, one hundred sixty-one million, four hundred thirty-seven thousand, nine hundred twenty".