345888021788 has 24 divisors (see below), whose sum is σ = 608885341008. Its totient is φ = 171922093056.

The previous prime is 345888021749. The next prime is 345888021821. The reversal of 345888021788 is 887120888543.

It is a self number, because there is not a number n which added to its sum of digits gives 345888021788.

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, 896795 + ... + 1223117.

It is an arithmetic number, because the mean of its divisors is an integer number (25370222542).

Almost surely, 2^345888021788 is an apocalyptic number.

It is an amenable number.

345888021788 is a deficient number, since it is larger than the sum of its proper divisors (262997319220).

345888021788 is a wasteful number, since it uses less digits than its factorization.

345888021788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327893 (or 327891 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 62.

The spelling of 345888021788 in words is "three hundred forty-five billion, eight hundred eighty-eight million, twenty-one thousand, seven hundred eighty-eight".