345477879640 has 32 divisors (see below), whose sum is σ = 777433290480. Its totient is φ = 138171940992.

The previous prime is 345477879629. The next prime is 345477879679. The reversal of 345477879640 is 46978774543.

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, 307242 + ... + 886201.

Almost surely, 2^345477879640 is an apocalyptic number.

It is an amenable number.

345477879640 is an abundant number, since it is smaller than the sum of its proper divisors (431955410840).

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

345477879640 is a wasteful number, since it uses less digits than its factorization.

345477879640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200691 (or 1200687 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 64.

The spelling of 345477879640 in words is "three hundred forty-five billion, four hundred seventy-seven million, eight hundred seventy-nine thousand, six hundred forty".