21463547450 has 12 divisors (see below), whose sum is σ = 39922198350. Its totient is φ = 8585418960.

The previous prime is 21463547447. The next prime is 21463547461. The reversal of 21463547450 is 5474536412.

It can be written as a sum of positive squares in 3 ways, for example, as 20192125801 + 1271421649 = 142099^2 + 35657^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21463547398 and 21463547407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214635425 + ... + 214635524.

Almost surely, 2^21463547450 is an apocalyptic number.

21463547450 is a deficient number, since it is larger than the sum of its proper divisors (18458650900).

21463547450 is a wasteful number, since it uses less digits than its factorization.

21463547450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429270961 (or 429270956 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 21463547450 in words is "twenty-one billion, four hundred sixty-three million, five hundred forty-seven thousand, four hundred fifty".