20126373164537 has 2 divisors, whose sum is σ = 20126373164538. Its totient is φ = 20126373164536.

The previous prime is 20126373164411. The next prime is 20126373164543. The reversal of 20126373164537 is 73546137362102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20115619681936 + 10753482601 = 4485044^2 + 103699^2 .

It is a cyclic number.

It is not a de Polignac number, because 20126373164537 - 2¹⁴ = 20126373148153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20126373184537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063186582268 + 10063186582269.

It is an arithmetic number, because the mean of its divisors is an integer number (10063186582269).

Almost surely, 2^{20126373164537} is an apocalyptic number.

It is an amenable number.

20126373164537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20126373164537 is an equidigital number, since it uses as much as digits as its factorization.

20126373164537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 20126373164537 in words is "twenty trillion, one hundred twenty-six billion, three hundred seventy-three million, one hundred sixty-four thousand, five hundred thirty-seven".