345356564563631 has 4 divisors (see below), whose sum is σ = 346143253777200. Its totient is φ = 344569875350064.

The previous prime is 345356564563609. The next prime is 345356564563649. The reversal of 345356564563631 is 136365465653543.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345356564563631 is a prime.

It is a super-2 number, since 2×345356564563631² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345356564563331) 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, 393344606126 + ... + 393344607003.

It is an arithmetic number, because the mean of its divisors is an integer number (86535813444300).

Almost surely, 2^{345356564563631} is an apocalyptic number.

345356564563631 is a deficient number, since it is larger than the sum of its proper divisors (786689213569).

345356564563631 is an equidigital number, since it uses as much as digits as its factorization.

345356564563631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786689213568.

The product of its digits is 1049760000, while the sum is 65.

The spelling of 345356564563631 in words is "three hundred forty-five trillion, three hundred fifty-six billion, five hundred sixty-four million, five hundred sixty-three thousand, six hundred thirty-one".