20526304061 has 2 divisors, whose sum is σ = 20526304062. Its totient is φ = 20526304060.

The previous prime is 20526304039. The next prime is 20526304093. The reversal of 20526304061 is 16040362502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11388091225 + 9138212836 = 106715^2 + 95594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20526304061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20526304361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10263152030 + 10263152031.

It is an arithmetic number, because the mean of its divisors is an integer number (10263152031).

Almost surely, 2^20526304061 is an apocalyptic number.

It is an amenable number.

20526304061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20526304061 is an equidigital number, since it uses as much as digits as its factorization.

20526304061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 20526304061 its reverse (16040362502), we get a palindrome (36566666563).

The spelling of 20526304061 in words is "twenty billion, five hundred twenty-six million, three hundred four thousand, sixty-one".