22421532646 has 4 divisors (see below), whose sum is σ = 33632298972. Its totient is φ = 11210766322.

The previous prime is 22421532641. The next prime is 22421532677. The reversal of 22421532646 is 64623512422.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×22421532646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421532641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605383160 + ... + 5605383163.

It is an arithmetic number, because the mean of its divisors is an integer number (8408074743).

Almost surely, 2^22421532646 is an apocalyptic number.

22421532646 is a deficient number, since it is larger than the sum of its proper divisors (11210766326).

22421532646 is a wasteful number, since it uses less digits than its factorization.

22421532646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210766325.

The product of its digits is 138240, while the sum is 37.

The spelling of 22421532646 in words is "twenty-two billion, four hundred twenty-one million, five hundred thirty-two thousand, six hundred forty-six".