83221032961 has 4 divisors (see below), whose sum is σ = 90786581424. Its totient is φ = 75655484500.

The previous prime is 83221032953. The next prime is 83221032989. The reversal of 83221032961 is 16923012238.

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 83221032961 - 2³ = 83221032953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83221032961.

It is not an unprimeable number, because it can be changed into a prime (83221036961) 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, 3782774215 + ... + 3782774236.

It is an arithmetic number, because the mean of its divisors is an integer number (22696645356).

Almost surely, 2^83221032961 is an apocalyptic number.

It is an amenable number.

83221032961 is a deficient number, since it is larger than the sum of its proper divisors (7565548463).

83221032961 is a wasteful number, since it uses less digits than its factorization.

83221032961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565548462.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 83221032961 in words is "eighty-three billion, two hundred twenty-one million, thirty-two thousand, nine hundred sixty-one".