20956232803 has 4 divisors (see below), whose sum is σ = 22861344888. Its totient is φ = 19051120720.

The previous prime is 20956232783. The next prime is 20956232831. The reversal of 20956232803 is 30823265902.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20956232803 - 2¹⁷ = 20956101731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20956232893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952556026 + ... + 952556047.

It is an arithmetic number, because the mean of its divisors is an integer number (5715336222).

Almost surely, 2^20956232803 is an apocalyptic number.

20956232803 is a deficient number, since it is larger than the sum of its proper divisors (1905112085).

20956232803 is a wasteful number, since it uses less digits than its factorization.

20956232803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905112084.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 20956232803 in words is "twenty billion, nine hundred fifty-six million, two hundred thirty-two thousand, eight hundred three".