1344640426143 has 64 divisors (see below), whose sum is σ = 2149896327168. Its totient is φ = 731431088640.

The previous prime is 1344640426139. The next prime is 1344640426147. The reversal of 1344640426143 is 3416240464431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1344640426139) and next prime (1344640426147).

It is not a de Polignac number, because 1344640426143 - 2² = 1344640426139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1344640426095 and 1344640426104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344640426147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146838321 + ... + 146847477.

It is an arithmetic number, because the mean of its divisors is an integer number (33592130112).

Almost surely, 2^{1344640426143} is an apocalyptic number.

1344640426143 is a deficient number, since it is larger than the sum of its proper divisors (805255901025).

1344640426143 is a wasteful number, since it uses less digits than its factorization.

1344640426143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13272.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 1344640426143 in words is "one trillion, three hundred forty-four billion, six hundred forty million, four hundred twenty-six thousand, one hundred forty-three".