345165304640 has 56 divisors (see below), whose sum is σ = 885149883240. Its totient is φ = 127445649408.

The previous prime is 345165304619. The next prime is 345165304663. The reversal of 345165304640 is 46403561543.

It can be written as a sum of positive squares in 4 ways, for example, as 73649275456 + 271516029184 = 271384^2 + 521072^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41482055 + ... + 41490374.

It is an arithmetic number, because the mean of its divisors is an integer number (15806247915).

Almost surely, 2^345165304640 is an apocalyptic number.

It is an amenable number.

345165304640 is an abundant number, since it is smaller than the sum of its proper divisors (539984578600).

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

345165304640 is a wasteful number, since it uses less digits than its factorization.

345165304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82972459 (or 82972449 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 345165304640 in words is "three hundred forty-five billion, one hundred sixty-five million, three hundred four thousand, six hundred forty".