20623245423 has 16 divisors (see below), whose sum is σ = 30007871616. Its totient is φ = 12494593440.

The previous prime is 20623245371. The next prime is 20623245431. The reversal of 20623245423 is 32454232602.

It is not a de Polignac number, because 20623245423 - 2⁶ = 20623245359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623245443) 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 15 ways as a sum of consecutive naturals, for example, 10861 + ... + 203382.

It is an arithmetic number, because the mean of its divisors is an integer number (1875491976).

Almost surely, 2^20623245423 is an apocalyptic number.

20623245423 is a deficient number, since it is larger than the sum of its proper divisors (9384626193).

20623245423 is a wasteful number, since it uses less digits than its factorization.

20623245423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217174.

The product of its (nonzero) digits is 69120, while the sum is 33.

The spelling of 20623245423 in words is "twenty billion, six hundred twenty-three million, two hundred forty-five thousand, four hundred twenty-three".