345887545840 has 20 divisors (see below), whose sum is σ = 804188544264. Its totient is φ = 138355018304.

The previous prime is 345887545727. The next prime is 345887545853. The reversal of 345887545840 is 48545788543.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2161797082 + ... + 2161797241.

Almost surely, 2^345887545840 is an apocalyptic number.

It is an amenable number.

345887545840 is an abundant number, since it is smaller than the sum of its proper divisors (458300998424).

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

345887545840 is a wasteful number, since it uses less digits than its factorization.

345887545840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323594336 (or 4323594330 counting only the distinct ones).

The product of its (nonzero) digits is 86016000, while the sum is 61.

The spelling of 345887545840 in words is "three hundred forty-five billion, eight hundred eighty-seven million, five hundred forty-five thousand, eight hundred forty".