21178282296 has 64 divisors (see below), whose sum is σ = 55402768800. Its totient is φ = 6739020288.

The previous prime is 21178282291. The next prime is 21178282319. The reversal of 21178282296 is 69228287112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21178282291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177931 + ... + 272058.

Almost surely, 2^21178282296 is an apocalyptic number.

It is an amenable number.

21178282296 is an abundant number, since it is smaller than the sum of its proper divisors (34224486504).

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

21178282296 is a wasteful number, since it uses less digits than its factorization.

21178282296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450088 (or 450084 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The spelling of 21178282296 in words is "twenty-one billion, one hundred seventy-eight million, two hundred eighty-two thousand, two hundred ninety-six".