340705639464923 has 32 divisors (see below), whose sum is σ = 378158095215936. Its totient is φ = 305567056723968.

The previous prime is 340705639464917. The next prime is 340705639464929. The reversal of 340705639464923 is 329464936507043.

It is an interprime number because it is at equal distance from previous prime (340705639464917) and next prime (340705639464929).

It is a cyclic number.

It is not a de Polignac number, because 340705639464923 - 2⁴ = 340705639464907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340705639464923.

It is not an unprimeable number, because it can be changed into a prime (340705639464929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9692315 + ... + 27845147.

It is an arithmetic number, because the mean of its divisors is an integer number (11817440475498).

Almost surely, 2^{340705639464923} is an apocalyptic number.

340705639464923 is a deficient number, since it is larger than the sum of its proper divisors (37452455751013).

340705639464923 is a wasteful number, since it uses less digits than its factorization.

340705639464923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18153503.

The product of its (nonzero) digits is 352719360, while the sum is 65.

The spelling of 340705639464923 in words is "three hundred forty trillion, seven hundred five billion, six hundred thirty-nine million, four hundred sixty-four thousand, nine hundred twenty-three".