20250782769 has 32 divisors (see below), whose sum is σ = 31552000000. Its totient is φ = 11548392912.

The previous prime is 20250782731. The next prime is 20250782777. The reversal of 20250782769 is 96728705202.

It is not a de Polignac number, because 20250782769 - 2¹⁹ = 20250258481 is a prime.

It is a super-2 number, since 2×20250782769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20250772769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493752 + ... + 533190.

It is an arithmetic number, because the mean of its divisors is an integer number (986000000).

Almost surely, 2^20250782769 is an apocalyptic number.

It is an amenable number.

20250782769 is a deficient number, since it is larger than the sum of its proper divisors (11301217231).

20250782769 is an equidigital number, since it uses as much as digits as its factorization.

20250782769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39962 (or 39948 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 20250782769 in words is "twenty billion, two hundred fifty million, seven hundred eighty-two thousand, seven hundred sixty-nine".