20541951292237 has 2 divisors, whose sum is σ = 20541951292238. Its totient is φ = 20541951292236.

The previous prime is 20541951292207. The next prime is 20541951292241. The reversal of 20541951292237 is 73229215914502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20530196612676 + 11754679561 = 4531026^2 + 108419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20541951292237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20541951292207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270975646118 + 10270975646119.

It is an arithmetic number, because the mean of its divisors is an integer number (10270975646119).

Almost surely, 2^{20541951292237} is an apocalyptic number.

It is an amenable number.

20541951292237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541951292237 is an equidigital number, since it uses as much as digits as its factorization.

20541951292237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 20541951292237 in words is "twenty trillion, five hundred forty-one billion, nine hundred fifty-one million, two hundred ninety-two thousand, two hundred thirty-seven".