21877231096 has 24 divisors (see below), whose sum is σ = 47716920720. Its totient is φ = 9375956016.

The previous prime is 21877231087. The next prime is 21877231121. The reversal of 21877231096 is 69013277812.

It is a super-2 number, since 2×21877231096² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27904240 + ... + 27905023.

It is an arithmetic number, because the mean of its divisors is an integer number (1988205030).

Almost surely, 2^21877231096 is an apocalyptic number.

It is an amenable number.

21877231096 is an abundant number, since it is smaller than the sum of its proper divisors (25839689624).

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

21877231096 is a wasteful number, since it uses less digits than its factorization.

21877231096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55809283 (or 55809272 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 21877231096 in words is "twenty-one billion, eight hundred seventy-seven million, two hundred thirty-one thousand, ninety-six".