345557931861 has 8 divisors (see below), whose sum is σ = 480776253120. Its totient is φ = 220355782592.

The previous prime is 345557931809. The next prime is 345557931863. The reversal of 345557931861 is 168139755543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345557931861 - 2⁹ = 345557931349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345557931863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504042916 + ... + 2504043053.

It is an arithmetic number, because the mean of its divisors is an integer number (60097031640).

Almost surely, 2^345557931861 is an apocalyptic number.

It is an amenable number.

345557931861 is a deficient number, since it is larger than the sum of its proper divisors (135218321259).

345557931861 is a wasteful number, since it uses less digits than its factorization.

345557931861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008085995.

The product of its digits is 13608000, while the sum is 57.

The spelling of 345557931861 in words is "three hundred forty-five billion, five hundred fifty-seven million, nine hundred thirty-one thousand, eight hundred sixty-one".