20541951292193 has 2 divisors, whose sum is σ = 20541951292194. Its totient is φ = 20541951292192.

The previous prime is 20541951292141. The next prime is 20541951292207. The reversal of 20541951292193 is 39129215914502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18816795135889 + 1725156156304 = 4337833^2 + 1313452^2 .

It is a cyclic number.

It is not a de Polignac number, because 20541951292193 - 2¹² = 20541951288097 is a prime.

It is not a weakly prime, because it can be changed into another prime (20541951297193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270975646096 + 10270975646097.

It is an arithmetic number, because the mean of its divisors is an integer number (10270975646097).

Almost surely, 2^{20541951292193} is an apocalyptic number.

It is an amenable number.

20541951292193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541951292193 is an equidigital number, since it uses as much as digits as its factorization.

20541951292193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 20541951292193 in words is "twenty trillion, five hundred forty-one billion, nine hundred fifty-one million, two hundred ninety-two thousand, one hundred ninety-three".