88564703221 has 4 divisors (see below), whose sum is σ = 88575226272. Its totient is φ = 88554180172.

The previous prime is 88564703167. The next prime is 88564703231. The reversal of 88564703221 is 12230746588.

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 a de Polignac number, because none of the positive numbers 2^k-88564703221 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 (88564703231) 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, 5248891 + ... + 5265736.

It is an arithmetic number, because the mean of its divisors is an integer number (22143806568).

Almost surely, 2^88564703221 is an apocalyptic number.

It is an amenable number.

88564703221 is a deficient number, since it is larger than the sum of its proper divisors (10523051).

88564703221 is a wasteful number, since it uses less digits than its factorization.

88564703221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10523050.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 88564703221 in words is "eighty-eight billion, five hundred sixty-four million, seven hundred three thousand, two hundred twenty-one".