345723956623 has 4 divisors (see below), whose sum is σ = 363919954360. Its totient is φ = 327527958888.

The previous prime is 345723956621. The next prime is 345723956659. The reversal of 345723956623 is 326659327543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345723956623 - 2¹ = 345723956621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345723956621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9097998840 + ... + 9097998877.

It is an arithmetic number, because the mean of its divisors is an integer number (90979988590).

Almost surely, 2^345723956623 is an apocalyptic number.

345723956623 is a deficient number, since it is larger than the sum of its proper divisors (18195997737).

345723956623 is a wasteful number, since it uses less digits than its factorization.

345723956623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18195997736.

The product of its digits is 24494400, while the sum is 55.

The spelling of 345723956623 in words is "three hundred forty-five billion, seven hundred twenty-three million, nine hundred fifty-six thousand, six hundred twenty-three".