21772936000 has 112 divisors (see below), whose sum is σ = 56759002560. Its totient is φ = 8250739200.

The previous prime is 21772935983. The next prime is 21772936037. The reversal of 21772936000 is 63927712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80379 + ... + 223621.

Almost surely, 2^21772936000 is an apocalyptic number.

21772936000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21772936000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28379501280).

21772936000 is an abundant number, since it is smaller than the sum of its proper divisors (34986066560).

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

21772936000 is a wasteful number, since it uses less digits than its factorization.

21772936000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143289 (or 143269 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The spelling of 21772936000 in words is "twenty-one billion, seven hundred seventy-two million, nine hundred thirty-six thousand".