21093027798 has 16 divisors (see below), whose sum is σ = 42259175280. Its totient is φ = 7018822656.

The previous prime is 21093027757. The next prime is 21093027799. The reversal of 21093027798 is 89772039012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21093027799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3042903 + ... + 3049826.

It is an arithmetic number, because the mean of its divisors is an integer number (2641198455).

Almost surely, 2^21093027798 is an apocalyptic number.

21093027798 is an abundant number, since it is smaller than the sum of its proper divisors (21166147482).

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

21093027798 is a wasteful number, since it uses less digits than its factorization.

21093027798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093311.

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 21093027798 in words is "twenty-one billion, ninety-three million, twenty-seven thousand, seven hundred ninety-eight".