21772000412 has 12 divisors (see below), whose sum is σ = 38180546880. Its totient is φ = 10863272736.

The previous prime is 21772000387. The next prime is 21772000423. The reversal of 21772000412 is 21400027712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5679713 + ... + 5683544.

It is an arithmetic number, because the mean of its divisors is an integer number (3181712240).

Almost surely, 2^21772000412 is an apocalyptic number.

It is an amenable number.

21772000412 is a deficient number, since it is larger than the sum of its proper divisors (16408546468).

21772000412 is a wasteful number, since it uses less digits than its factorization.

21772000412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363740 (or 11363738 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The spelling of 21772000412 in words is "twenty-one billion, seven hundred seventy-two million, four hundred twelve", and thus it is an aban number.