654321389880 has 32 divisors (see below), whose sum is σ = 1962964170000. Its totient is φ = 174485703936.

The previous prime is 654321389873. The next prime is 654321389977. The reversal of 654321389880 is 88983123456.

It is a self number, because there is not a number n which added to its sum of digits gives 654321389880.

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, 2726339005 + ... + 2726339244.

Almost surely, 2^654321389880 is an apocalyptic number.

654321389880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

654321389880 is an abundant number, since it is smaller than the sum of its proper divisors (1308642780120).

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

654321389880 is a wasteful number, since it uses less digits than its factorization.

654321389880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452678263 (or 5452678259 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 654321389880 in words is "six hundred fifty-four billion, three hundred twenty-one million, three hundred eighty-nine thousand, eight hundred eighty".