21100280592 has 80 divisors (see below), whose sum is σ = 60224895360. Its totient is φ = 6331877376.

The previous prime is 21100280497. The next prime is 21100280623. The reversal of 21100280592 is 29508200112.

It is a super-2 number, since 2×21100280592² (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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543367 + ... + 580902.

It is an arithmetic number, because the mean of its divisors is an integer number (752811192).

Almost surely, 2^21100280592 is an apocalyptic number.

It is an amenable number.

21100280592 is an abundant number, since it is smaller than the sum of its proper divisors (39124614768).

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

21100280592 is a wasteful number, since it uses less digits than its factorization.

21100280592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124320 (or 1124314 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 21100280592 in words is "twenty-one billion, one hundred million, two hundred eighty thousand, five hundred ninety-two".