20440523091 has 8 divisors (see below), whose sum is σ = 27768258000. Its totient is φ = 13369901792.

The previous prime is 20440523029. The next prime is 20440523093. The reversal of 20440523091 is 19032504402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20440523091 - 2¹⁴ = 20440506707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20440523093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64278216 + ... + 64278533.

It is an arithmetic number, because the mean of its divisors is an integer number (3471032250).

Almost surely, 2^20440523091 is an apocalyptic number.

20440523091 is a deficient number, since it is larger than the sum of its proper divisors (7327734909).

20440523091 is a wasteful number, since it uses less digits than its factorization.

20440523091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128556805.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 20440523091 in words is "twenty billion, four hundred forty million, five hundred twenty-three thousand, ninety-one".