220916820924433 has 4 divisors (see below), whose sum is σ = 220994037572148. Its totient is φ = 220839604276720.

The previous prime is 220916820924431. The next prime is 220916820924439. The reversal of 220916820924433 is 334429028619022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183549604610304 + 37367216314129 = 13548048^2 + 6112873^2 .

It is a cyclic number.

It is not a de Polignac number, because 220916820924433 - 2¹ = 220916820924431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220916820924431) 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, 38608319566 + ... + 38608325287.

It is an arithmetic number, because the mean of its divisors is an integer number (55248509393037).

Almost surely, 2^{220916820924433} is an apocalyptic number.

It is an amenable number.

220916820924433 is a deficient number, since it is larger than the sum of its proper divisors (77216647715).

220916820924433 is an equidigital number, since it uses as much as digits as its factorization.

220916820924433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77216647714.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 220916820924433 in words is "two hundred twenty trillion, nine hundred sixteen billion, eight hundred twenty million, nine hundred twenty-four thousand, four hundred thirty-three".