21970049024 has 192 divisors, whose sum is σ = 55250657280. Its totient is φ = 8484618240.

The previous prime is 21970049021. The next prime is 21970049089. The reversal of 21970049024 is 42094007912.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21970049021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20026844 + ... + 20027940.

It is an arithmetic number, because the mean of its divisors is an integer number (287763840).

Almost surely, 2^21970049024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21970049024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27625328640).

21970049024 is an abundant number, since it is smaller than the sum of its proper divisors (33280608256).

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

21970049024 is a wasteful number, since it uses less digits than its factorization.

21970049024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 21970049024 in words is "twenty-one billion, nine hundred seventy million, forty-nine thousand, twenty-four".