20582118149 has 2 divisors, whose sum is σ = 20582118150. Its totient is φ = 20582118148.

The previous prime is 20582118101. The next prime is 20582118181. The reversal of 20582118149 is 94181128502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11375715649 + 9206402500 = 106657^2 + 95950^2 .

It is a cyclic number.

It is not a de Polignac number, because 20582118149 - 2²⁰ = 20581069573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20582112149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10291059074 + 10291059075.

It is an arithmetic number, because the mean of its divisors is an integer number (10291059075).

Almost surely, 2^20582118149 is an apocalyptic number.

It is an amenable number.

20582118149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20582118149 is an equidigital number, since it uses as much as digits as its factorization.

20582118149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 20582118149 in words is "twenty billion, five hundred eighty-two million, one hundred eighteen thousand, one hundred forty-nine".