20775162503 has 4 divisors (see below), whose sum is σ = 20775672528. Its totient is φ = 20774652480.

The previous prime is 20775162493. The next prime is 20775162509. The reversal of 20775162503 is 30526157702.

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 20775162503 - 2⁴ = 20775162487 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 (20775162509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188051 + ... + 277332.

It is an arithmetic number, because the mean of its divisors is an integer number (5193918132).

Almost surely, 2^20775162503 is an apocalyptic number.

20775162503 is a deficient number, since it is larger than the sum of its proper divisors (510025).

20775162503 is an equidigital number, since it uses as much as digits as its factorization.

20775162503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510024.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 20775162503 in words is "twenty billion, seven hundred seventy-five million, one hundred sixty-two thousand, five hundred three".