1344905797978 has 8 divisors (see below), whose sum is σ = 2021087642580. Its totient is φ = 671209917120.

The previous prime is 1344905797927. The next prime is 1344905798017. The reversal of 1344905797978 is 8797975094431.

It can be written as a sum of positive squares in 2 ways, for example, as 1342662165289 + 2243632689 = 1158733^2 + 47367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1344905797978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621489583 + ... + 621491746.

Almost surely, 2^{1344905797978} is an apocalyptic number.

1344905797978 is a deficient number, since it is larger than the sum of its proper divisors (676181844602).

1344905797978 is a wasteful number, since it uses less digits than its factorization.

1344905797978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242981872.

The product of its (nonzero) digits is 480090240, while the sum is 73.

The spelling of 1344905797978 in words is "one trillion, three hundred forty-four billion, nine hundred five million, seven hundred ninety-seven thousand, nine hundred seventy-eight".