20769258050 has 54 divisors (see below), whose sum is σ = 39241106433. Its totient is φ = 8178487680.

The previous prime is 20769258049. The next prime is 20769258053. The reversal of 20769258050 is 5085296702.

It can be written as a sum of positive squares in 14 ways, for example, as 45064369 + 20724193681 = 6713^2 + 143959^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=101905.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20769257992 and 20769258010.

It is not an unprimeable number, because it can be changed into a prime (20769258053) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 90695336 + ... + 90695564.

Almost surely, 2^20769258050 is an apocalyptic number.

20769258050 is a deficient number, since it is larger than the sum of its proper divisors (18471848383).

20769258050 is an frugal number, since it uses more digits than its factorization.

20769258050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 20769258050 in words is "twenty billion, seven hundred sixty-nine million, two hundred fifty-eight thousand, fifty".