20280751670801 has 2 divisors, whose sum is σ = 20280751670802. Its totient is φ = 20280751670800.

The previous prime is 20280751670737. The next prime is 20280751670849. The reversal of 20280751670801 is 10807615708202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14763307713025 + 5517443957776 = 3842305^2 + 2348924^2 .

It is a cyclic number.

It is not a de Polignac number, because 20280751670801 - 2⁶ = 20280751670737 is a prime.

It is a super-2 number, since 2×20280751670801² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20280751675801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10140375835400 + 10140375835401.

It is an arithmetic number, because the mean of its divisors is an integer number (10140375835401).

Almost surely, 2^{20280751670801} is an apocalyptic number.

It is an amenable number.

20280751670801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20280751670801 is an equidigital number, since it uses as much as digits as its factorization.

20280751670801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 20280751670801 in words is "twenty trillion, two hundred eighty billion, seven hundred fifty-one million, six hundred seventy thousand, eight hundred one".