21932362980 has 192 divisors, whose sum is σ = 76838952960. Its totient is φ = 5145379200.

The previous prime is 21932362961. The next prime is 21932362981. The reversal of 21932362980 is 8926323912.

It is a happy number.

21932362980 is a `hidden beast` number, since 2 + 19 + 3 + 2 + 3 + 629 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (21932362981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124587 + ... + 243693.

It is an arithmetic number, because the mean of its divisors is an integer number (400202880).

Almost surely, 2^21932362980 is an apocalyptic number.

21932362980 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 21932362980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38419476480).

21932362980 is an abundant number, since it is smaller than the sum of its proper divisors (54906589980).

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

21932362980 is a wasteful number, since it uses less digits than its factorization.

21932362980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119167 (or 119159 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 21932362980 in words is "twenty-one billion, nine hundred thirty-two million, three hundred sixty-two thousand, nine hundred eighty".