20768235703 has 4 divisors (see below), whose sum is σ = 21861300760. Its totient is φ = 19675170648.

The previous prime is 20768235673. The next prime is 20768235739. The reversal of 20768235703 is 30753286702.

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 20768235703 - 2³³ = 12178301111 is a prime.

It is a super-2 number, since 2×20768235703² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20768235703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20768235743) 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, 546532500 + ... + 546532537.

It is an arithmetic number, because the mean of its divisors is an integer number (5465325190).

Almost surely, 2^20768235703 is an apocalyptic number.

20768235703 is a deficient number, since it is larger than the sum of its proper divisors (1093065057).

20768235703 is a wasteful number, since it uses less digits than its factorization.

20768235703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093065056.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 20768235703 in words is "twenty billion, seven hundred sixty-eight million, two hundred thirty-five thousand, seven hundred three".