63473566621 has 8 divisors (see below), whose sum is σ = 67835413440. Its totient is φ = 59181509568.

The previous prime is 63473566609. The next prime is 63473566631. The reversal of 63473566621 is 12666537436.

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 63473566621 - 2¹¹ = 63473564573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63473566631) 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, 17445561 + ... + 17449198.

It is an arithmetic number, because the mean of its divisors is an integer number (8479426680).

Almost surely, 2^63473566621 is an apocalyptic number.

It is an amenable number.

63473566621 is a deficient number, since it is larger than the sum of its proper divisors (4361846819).

63473566621 is a wasteful number, since it uses less digits than its factorization.

63473566621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34894883.

The product of its digits is 3265920, while the sum is 49.

The spelling of 63473566621 in words is "sixty-three billion, four hundred seventy-three million, five hundred sixty-six thousand, six hundred twenty-one".