21877098316 has 24 divisors (see below), whose sum is σ = 39269587280. Its totient is φ = 10660507200.

The previous prime is 21877098311. The next prime is 21877098401. The reversal of 21877098316 is 61389077812.

It is not an unprimeable number, because it can be changed into a prime (21877098311) 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, 384690 + ... + 437881.

Almost surely, 2^21877098316 is an apocalyptic number.

It is an amenable number.

21877098316 is a deficient number, since it is larger than the sum of its proper divisors (17392488964).

21877098316 is a wasteful number, since it uses less digits than its factorization.

21877098316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822745 (or 822743 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 21877098316 in words is "twenty-one billion, eight hundred seventy-seven million, ninety-eight thousand, three hundred sixteen".