20924317886 has 4 divisors (see below), whose sum is σ = 31386476832. Its totient is φ = 10462158942.

The previous prime is 20924317867. The next prime is 20924317933. The reversal of 20924317886 is 68871342902.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5231079470 + ... + 5231079473.

It is an arithmetic number, because the mean of its divisors is an integer number (7846619208).

Almost surely, 2^20924317886 is an apocalyptic number.

20924317886 is a deficient number, since it is larger than the sum of its proper divisors (10462158946).

20924317886 is a wasteful number, since it uses less digits than its factorization.

20924317886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462158945.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 20924317886 in words is "twenty billion, nine hundred twenty-four million, three hundred seventeen thousand, eight hundred eighty-six".