1368744478631 has 4 divisors (see below), whose sum is σ = 1382296404264. Its totient is φ = 1355192553000.

The previous prime is 1368744478583. The next prime is 1368744478657.

1368744478631 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1368744478631 - 2⁶ = 1368744478567 is a prime.

It is a super-2 number, since 2×1368744478631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368744477631) 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, 6775962665 + ... + 6775962866.

It is an arithmetic number, because the mean of its divisors is an integer number (345574101066).

Almost surely, 2^{1368744478631} is an apocalyptic number.

1368744478631 is a deficient number, since it is larger than the sum of its proper divisors (13551925633).

1368744478631 is a wasteful number, since it uses less digits than its factorization.

1368744478631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13551925632.

The product of its digits is 65028096, while the sum is 62.

The spelling of 1368744478631 in words is "one trillion, three hundred sixty-eight billion, seven hundred forty-four million, four hundred seventy-eight thousand, six hundred thirty-one".