20838322193077 has 2 divisors, whose sum is σ = 20838322193078. Its totient is φ = 20838322193076.

The previous prime is 20838322193057. The next prime is 20838322193083. The reversal of 20838322193077 is 77039122383802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11340251565841 + 9498070627236 = 3367529^2 + 3081894^2 .

It is a cyclic number.

It is not a de Polignac number, because 20838322193077 - 2¹⁹ = 20838321668789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20838322193057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10419161096538 + 10419161096539.

It is an arithmetic number, because the mean of its divisors is an integer number (10419161096539).

Almost surely, 2^{20838322193077} is an apocalyptic number.

It is an amenable number.

20838322193077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20838322193077 is an equidigital number, since it uses as much as digits as its factorization.

20838322193077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 20838322193077 in words is "twenty trillion, eight hundred thirty-eight billion, three hundred twenty-two million, one hundred ninety-three thousand, seventy-seven".