63321040817 has 4 divisors (see below), whose sum is σ = 63365045760. Its totient is φ = 63277035876.

The previous prime is 63321040801. The next prime is 63321040823. The reversal of 63321040817 is 71804012336.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63321040817 - 2⁴ = 63321040801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63321043817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22000313 + ... + 22003190.

It is an arithmetic number, because the mean of its divisors is an integer number (15841261440).

Almost surely, 2^63321040817 is an apocalyptic number.

It is an amenable number.

63321040817 is a deficient number, since it is larger than the sum of its proper divisors (44004943).

63321040817 is a wasteful number, since it uses less digits than its factorization.

63321040817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44004942.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 63321040817 in words is "sixty-three billion, three hundred twenty-one million, forty thousand, eight hundred seventeen".