18580021248 has 56 divisors (see below), whose sum is σ = 49543764768. Its totient is φ = 6193332224.

The previous prime is 18580021237. The next prime is 18580021331. The reversal of 18580021248 is 84212008581.

It is a super-2 number, since 2×18580021248² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353436 + ... + 402587.

Almost surely, 2^18580021248 is an apocalyptic number.

It is an amenable number.

18580021248 is an abundant number, since it is smaller than the sum of its proper divisors (30963743520).

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

18580021248 is an frugal number, since it uses more digits than its factorization.

18580021248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756052 (or 756028 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 39.

The spelling of 18580021248 in words is "eighteen billion, five hundred eighty million, twenty-one thousand, two hundred forty-eight".