221140264783 has 24 divisors (see below), whose sum is σ = 233411823792. Its totient is φ = 209486331648.

The previous prime is 221140264777. The next prime is 221140264811. The reversal of 221140264783 is 387462041122.

It is a de Polignac number, because none of the positive numbers 2^k-221140264783 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 (221140264183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25260135 + ... + 25268887.

It is an arithmetic number, because the mean of its divisors is an integer number (9725492658).

Almost surely, 2^221140264783 is an apocalyptic number.

221140264783 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221140264783 is a deficient number, since it is larger than the sum of its proper divisors (12271559009).

221140264783 is a wasteful number, since it uses less digits than its factorization.

221140264783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9255 (or 9232 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 221140264783 in words is "two hundred twenty-one billion, one hundred forty million, two hundred sixty-four thousand, seven hundred eighty-three".