20432355623 has 8 divisors (see below), whose sum is σ = 21628477200. Its totient is φ = 19269004608.

The previous prime is 20432355613. The next prime is 20432355677. The reversal of 20432355623 is 32655323402.

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 20432355623 - 2²² = 20428161319 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 (20432355613) 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, 8191358 + ... + 8193851.

It is an arithmetic number, because the mean of its divisors is an integer number (2703559650).

Almost surely, 2^20432355623 is an apocalyptic number.

20432355623 is a deficient number, since it is larger than the sum of its proper divisors (1196121577).

20432355623 is a wasteful number, since it uses less digits than its factorization.

20432355623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16385281.

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 20432355623 in words is "twenty billion, four hundred thirty-two million, three hundred fifty-five thousand, six hundred twenty-three".