20360149020877 has 2 divisors, whose sum is σ = 20360149020878. Its totient is φ = 20360149020876.

The previous prime is 20360149020803. The next prime is 20360149020907. The reversal of 20360149020877 is 77802094106302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20125802020041 + 234347000836 = 4486179^2 + 484094^2 .

It is a cyclic number.

It is not a de Polignac number, because 20360149020877 - 2⁷ = 20360149020749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20360149020877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20360149020077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10180074510438 + 10180074510439.

It is an arithmetic number, because the mean of its divisors is an integer number (10180074510439).

Almost surely, 2^{20360149020877} is an apocalyptic number.

It is an amenable number.

20360149020877 is a deficient number, since it is larger than the sum of its proper divisors (1).

20360149020877 is an equidigital number, since it uses as much as digits as its factorization.

20360149020877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 20360149020877 in words is "twenty trillion, three hundred sixty billion, one hundred forty-nine million, twenty thousand, eight hundred seventy-seven".