22451010421550 has 24 divisors (see below), whose sum is σ = 43956715143000. Its totient is φ = 8507751317280.

The previous prime is 22451010421547. The next prime is 22451010421559. The reversal of 22451010421550 is 5512401015422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22451010421559) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11816320325 + ... + 11816322224.

It is an arithmetic number, because the mean of its divisors is an integer number (1831529797625).

Almost surely, 2^{22451010421550} is an apocalyptic number.

22451010421550 is a deficient number, since it is larger than the sum of its proper divisors (21505704721450).

22451010421550 is a wasteful number, since it uses less digits than its factorization.

22451010421550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23632642580 (or 23632642575 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 22451010421550 its reverse (5512401015422), we get a palindrome (27963411436972).

The spelling of 22451010421550 in words is "twenty-two trillion, four hundred fifty-one billion, ten million, four hundred twenty-one thousand, five hundred fifty".