1368169281481 has 16 divisors (see below), whose sum is σ = 1446653198848. Its totient is φ = 1293242070960.

The previous prime is 1368169281449. The next prime is 1368169281487. The reversal of 1368169281481 is 1841829618631.

It is not a de Polignac number, because 1368169281481 - 2⁵ = 1368169281449 is a prime.

It is a super-2 number, since 2×1368169281481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368169281487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746995 + ... + 1815031.

It is an arithmetic number, because the mean of its divisors is an integer number (90415824928).

Almost surely, 2^{1368169281481} is an apocalyptic number.

It is an amenable number.

1368169281481 is a deficient number, since it is larger than the sum of its proper divisors (78483917367).

1368169281481 is an frugal number, since it uses more digits than its factorization.

1368169281481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068173 (or 1068111 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 58.

The spelling of 1368169281481 in words is "one trillion, three hundred sixty-eight billion, one hundred sixty-nine million, two hundred eighty-one thousand, four hundred eighty-one".