21476254450 has 24 divisors (see below), whose sum is σ = 45652381632. Its totient is φ = 7363287120.

The previous prime is 21476254417. The next prime is 21476254487. The reversal of 21476254450 is 5445267412.

It is a happy number.

It is a super-2 number, since 2×21476254450² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30680014 + ... + 30680713.

It is an arithmetic number, because the mean of its divisors is an integer number (1902182568).

Almost surely, 2^21476254450 is an apocalyptic number.

21476254450 is an abundant number, since it is smaller than the sum of its proper divisors (24176127182).

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

21476254450 is a wasteful number, since it uses less digits than its factorization.

21476254450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61360746 (or 61360741 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 21476254450 in words is "twenty-one billion, four hundred seventy-six million, two hundred fifty-four thousand, four hundred fifty".