21919174296 has 16 divisors (see below), whose sum is σ = 54797935800. Its totient is φ = 7306391424.

The previous prime is 21919174267. The next prime is 21919174339. The reversal of 21919174296 is 69247191912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456649441 + ... + 456649488.

Almost surely, 2^21919174296 is an apocalyptic number.

It is an amenable number.

21919174296 is an abundant number, since it is smaller than the sum of its proper divisors (32878761504).

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

21919174296 is a wasteful number, since it uses less digits than its factorization.

21919174296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913298938 (or 913298934 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The spelling of 21919174296 in words is "twenty-one billion, nine hundred nineteen million, one hundred seventy-four thousand, two hundred ninety-six".