345421517211 has 24 divisors (see below), whose sum is σ = 507986812944. Its totient is φ = 226128260160.

The previous prime is 345421517149. The next prime is 345421517257. The reversal of 345421517211 is 112715124543.

345421517211 is a `hidden beast` number, since 3 + 4 + 5 + 421 + 5 + 17 + 211 = 666.

It is not a de Polignac number, because 345421517211 - 2⁷ = 345421517083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345421517291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712380 + ... + 1094681.

It is an arithmetic number, because the mean of its divisors is an integer number (21166117206).

Almost surely, 2^345421517211 is an apocalyptic number.

345421517211 is a deficient number, since it is larger than the sum of its proper divisors (162565295733).

345421517211 is a wasteful number, since it uses less digits than its factorization.

345421517211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807451 (or 1807448 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The spelling of 345421517211 in words is "three hundred forty-five billion, four hundred twenty-one million, five hundred seventeen thousand, two hundred eleven".