21470734622450 has 24 divisors (see below), whose sum is σ = 40142486448948. Its totient is φ = 8543794913280.

The previous prime is 21470734622437. The next prime is 21470734622507. The reversal of 21470734622450 is 5422643707412.

It can be written as a sum of positive squares in 6 ways, for example, as 1780561978129 + 19690172644321 = 1334377^2 + 4437361^2 .

It is a super-4 number, since 4×21470734622450⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21470734622395 and 21470734622404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112463647 + ... + 1112482946.

Almost surely, 2^{21470734622450} is an apocalyptic number.

21470734622450 is a deficient number, since it is larger than the sum of its proper divisors (18671751826498).

21470734622450 is a wasteful number, since it uses less digits than its factorization.

21470734622450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224946798 (or 2224946793 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 21470734622450 in words is "twenty-one trillion, four hundred seventy billion, seven hundred thirty-four million, six hundred twenty-two thousand, four hundred fifty".