83221564574 has 32 divisors (see below), whose sum is σ = 132683443200. Its totient is φ = 39038220000.

The previous prime is 83221564561. The next prime is 83221564577. The reversal of 83221564574 is 47546512238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83221564577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1682699 + ... + 1731449.

It is an arithmetic number, because the mean of its divisors is an integer number (4146357600).

Almost surely, 2^83221564574 is an apocalyptic number.

83221564574 is a deficient number, since it is larger than the sum of its proper divisors (49461878626).

83221564574 is a wasteful number, since it uses less digits than its factorization.

83221564574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49208.

The product of its digits is 1612800, while the sum is 47.

The spelling of 83221564574 in words is "eighty-three billion, two hundred twenty-one million, five hundred sixty-four thousand, five hundred seventy-four".