220263402891 has 32 divisors (see below), whose sum is σ = 355830550528. Its totient is φ = 118512616320.

The previous prime is 220263402889. The next prime is 220263402899. The reversal of 220263402891 is 198204362022.

220263402891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220263402891 - 2¹ = 220263402889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220263402899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4548160 + ... + 4596333.

It is an arithmetic number, because the mean of its divisors is an integer number (11119704704).

Almost surely, 2^220263402891 is an apocalyptic number.

220263402891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220263402891 is a deficient number, since it is larger than the sum of its proper divisors (135567147637).

220263402891 is a wasteful number, since it uses less digits than its factorization.

220263402891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9144571.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 220263402891 in words is "two hundred twenty billion, two hundred sixty-three million, four hundred two thousand, eight hundred ninety-one".