21966929622 has 60 divisors (see below), whose sum is σ = 53712237348. Its totient is φ = 6654749400.

The previous prime is 21966929609. The next prime is 21966929641. The reversal of 21966929622 is 22692966912.

It is a happy number.

21966929622 is a `hidden beast` number, since 2 + 1 + 9 + 6 + 6 + 9 + 2 + 9 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6254847 + ... + 6258357.

Almost surely, 2^21966929622 is an apocalyptic number.

21966929622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21966929622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26856118674).

21966929622 is an abundant number, since it is smaller than the sum of its proper divisors (31745307726).

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

21966929622 is an frugal number, since it uses more digits than its factorization.

21966929622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047 (or 3527 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The spelling of 21966929622 in words is "twenty-one billion, nine hundred sixty-six million, nine hundred twenty-nine thousand, six hundred twenty-two".