20623322687 has 8 divisors (see below), whose sum is σ = 22527899472. Its totient is φ = 18723700800.

The previous prime is 20623322617. The next prime is 20623322723. The reversal of 20623322687 is 78622332602.

It is a happy number.

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 20623322687 - 2¹² = 20623318591 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 (20623322617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230014 + ... + 1246667.

It is an arithmetic number, because the mean of its divisors is an integer number (2815987434).

Almost surely, 2^20623322687 is an apocalyptic number.

20623322687 is a deficient number, since it is larger than the sum of its proper divisors (1904576785).

20623322687 is a wasteful number, since it uses less digits than its factorization.

20623322687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477449.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 20623322687 in words is "twenty billion, six hundred twenty-three million, three hundred twenty-two thousand, six hundred eighty-seven".