20303404477783 has 8 divisors (see below), whose sum is σ = 23769839388960. Its totient is φ = 16978456705920.

The previous prime is 20303404477723. The next prime is 20303404477789. The reversal of 20303404477783 is 38777440430302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303404477783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20303404477783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303404477789) 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, 35371784518 + ... + 35371785091.

It is an arithmetic number, because the mean of its divisors is an integer number (2971229923620).

Almost surely, 2^{20303404477783} is an apocalyptic number.

20303404477783 is a deficient number, since it is larger than the sum of its proper divisors (3466434911177).

20303404477783 is an equidigital number, since it uses as much as digits as its factorization.

20303404477783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70743569657.

The product of its (nonzero) digits is 9483264, while the sum is 52.

The spelling of 20303404477783 in words is "twenty trillion, three hundred three billion, four hundred four million, four hundred seventy-seven thousand, seven hundred eighty-three".