21446055450 has 48 divisors (see below), whose sum is σ = 59095800960. Its totient is φ = 5718947760.

The previous prime is 21446055427. The next prime is 21446055451. The reversal of 21446055450 is 5455064412.

21446055450 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 605 + 5 + 45 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (21446055451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7941634 + ... + 7944333.

It is an arithmetic number, because the mean of its divisors is an integer number (1231162520).

Almost surely, 2^21446055450 is an apocalyptic number.

21446055450 is an abundant number, since it is smaller than the sum of its proper divisors (37649745510).

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

21446055450 is a wasteful number, since it uses less digits than its factorization.

21446055450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885988 (or 15885977 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 21446055450 in words is "twenty-one billion, four hundred forty-six million, fifty-five thousand, four hundred fifty".