345686841438440 has 64 divisors (see below), whose sum is σ = 785574441522000. Its totient is φ = 136892066918400.

The previous prime is 345686841438439. The next prime is 345686841438487. The reversal of 345686841438440 is 44834148686543.

It can be written as a sum of positive squares in 8 ways, for example, as 305958099588964 + 39728741849476 = 17491658^2 + 6303074^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36429776 + ... + 44927744.

Almost surely, 2^{345686841438440} is an apocalyptic number.

It is an amenable number.

345686841438440 is an abundant number, since it is smaller than the sum of its proper divisors (439887600083560).

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

345686841438440 is a wasteful number, since it uses less digits than its factorization.

345686841438440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8508150 (or 8508146 counting only the distinct ones).

The product of its (nonzero) digits is 849346560, while the sum is 68.

The spelling of 345686841438440 in words is "three hundred forty-five trillion, six hundred eighty-six billion, eight hundred forty-one million, four hundred thirty-eight thousand, four hundred forty".