345511405212 has 12 divisors (see below), whose sum is σ = 806193278856. Its totient is φ = 115170468400.

The previous prime is 345511405177. The next prime is 345511405243. The reversal of 345511405212 is 212504115543.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×345511405212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14396308539 + ... + 14396308562.

It is an arithmetic number, because the mean of its divisors is an integer number (67182773238).

Almost surely, 2^345511405212 is an apocalyptic number.

It is an amenable number.

345511405212 is an abundant number, since it is smaller than the sum of its proper divisors (460681873644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345511405212 is a wasteful number, since it uses less digits than its factorization.

345511405212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28792617108 (or 28792617106 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 345511405212 in words is "three hundred forty-five billion, five hundred eleven million, four hundred five thousand, two hundred twelve".