20766013250 has 16 divisors (see below), whose sum is σ = 38873977272. Its totient is φ = 8306405200.

The previous prime is 20766013231. The next prime is 20766013271. The reversal of 20766013250 is 5231066702.

It can be written as a sum of positive squares in 4 ways, for example, as 3865233241 + 16900780009 = 62171^2 + 130003^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41531777 + ... + 41532276.

Almost surely, 2^20766013250 is an apocalyptic number.

20766013250 is a deficient number, since it is larger than the sum of its proper divisors (18107964022).

20766013250 is an equidigital number, since it uses as much as digits as its factorization.

20766013250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83064070 (or 83064060 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

Adding to 20766013250 its reverse (5231066702), we get a palindrome (25997079952).

The spelling of 20766013250 in words is "twenty billion, seven hundred sixty-six million, thirteen thousand, two hundred fifty".