21283653047 has 8 divisors (see below), whose sum is σ = 22551494976. Its totient is φ = 20017573632.

The previous prime is 21283652993. The next prime is 21283653067. The reversal of 21283653047 is 74035638212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21283653047 - 2³⁰ = 20209911223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21283652995 and 21283653013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21283653067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415718 + ... + 464099.

It is an arithmetic number, because the mean of its divisors is an integer number (2818936872).

Almost surely, 2^21283653047 is an apocalyptic number.

21283653047 is a deficient number, since it is larger than the sum of its proper divisors (1267841929).

21283653047 is a wasteful number, since it uses less digits than its factorization.

21283653047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881257.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 21283653047 in words is "twenty-one billion, two hundred eighty-three million, six hundred fifty-three thousand, forty-seven".