1340415004391 has 2 divisors, whose sum is σ = 1340415004392. Its totient is φ = 1340415004390.

The previous prime is 1340415004373. The next prime is 1340415004417. The reversal of 1340415004391 is 1934005140431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340415004391 - 2²⁶ = 1340347895527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340415004321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670207502195 + 670207502196.

It is an arithmetic number, because the mean of its divisors is an integer number (670207502196).

Almost surely, 2^{1340415004391} is an apocalyptic number.

1340415004391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340415004391 is an equidigital number, since it uses as much as digits as its factorization.

1340415004391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 1340415004391 in words is "one trillion, three hundred forty billion, four hundred fifteen million, four thousand, three hundred ninety-one".