20260260772 has 12 divisors (see below), whose sum is σ = 35468544076. Its totient is φ = 10126391040.

The previous prime is 20260260751. The next prime is 20260260791. The reversal of 20260260772 is 27706206202.

It can be written as a sum of positive squares in 2 ways, for example, as 11156429376 + 9103831396 = 105624^2 + 95414^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922629 + ... + 944332.

Almost surely, 2^20260260772 is an apocalyptic number.

It is an amenable number.

20260260772 is a deficient number, since it is larger than the sum of its proper divisors (15208283304).

20260260772 is a wasteful number, since it uses less digits than its factorization.

20260260772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869678 (or 1869676 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

Adding to 20260260772 its reverse (27706206202), we get a palindrome (47966466974).

The spelling of 20260260772 in words is "twenty billion, two hundred sixty million, two hundred sixty thousand, seven hundred seventy-two".