345421870815 has 24 divisors (see below), whose sum is σ = 642907646640. Its totient is φ = 157907140608.

The previous prime is 345421870789. The next prime is 345421870847. The reversal of 345421870815 is 518078124543.

It is not a de Polignac number, because 345421870815 - 2⁷ = 345421870687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234980130 + ... + 234981599.

It is an arithmetic number, because the mean of its divisors is an integer number (26787818610).

Almost surely, 2^345421870815 is an apocalyptic number.

345421870815 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

345421870815 is a deficient number, since it is larger than the sum of its proper divisors (297485775825).

345421870815 is a wasteful number, since it uses less digits than its factorization.

345421870815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469961751 (or 469961744 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 345421870815 in words is "three hundred forty-five billion, four hundred twenty-one million, eight hundred seventy thousand, eight hundred fifteen".