1340703626665 has 16 divisors (see below), whose sum is σ = 1756335884688. Its totient is φ = 976495620096.

The previous prime is 1340703626659. The next prime is 1340703626693. The reversal of 1340703626665 is 5666263070431.

It can be written as a sum of positive squares in 8 ways, for example, as 250717514089 + 1089986112576 = 500717^2 + 1044024^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340703626665 - 2¹⁵ = 1340703593897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141270664 + ... + 141280153.

It is an arithmetic number, because the mean of its divisors is an integer number (109770992793).

Almost surely, 2^{1340703626665} is an apocalyptic number.

It is an amenable number.

1340703626665 is a deficient number, since it is larger than the sum of its proper divisors (415632258023).

1340703626665 is a wasteful number, since it uses less digits than its factorization.

1340703626665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282550908.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 1340703626665 in words is "one trillion, three hundred forty billion, seven hundred three million, six hundred twenty-six thousand, six hundred sixty-five".