2027720277197 has 2 divisors, whose sum is σ = 2027720277198. Its totient is φ = 2027720277196.

The previous prime is 2027720277179. The next prime is 2027720277251. The reversal of 2027720277197 is 7917720277202.

Together with previous prime (2027720277179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1352462006116 + 675258271081 = 1162954^2 + 821741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2027720277197 - 2²² = 2027716082893 is a prime.

It is a super-2 number, since 2×2027720277197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2027720277097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013860138598 + 1013860138599.

It is an arithmetic number, because the mean of its divisors is an integer number (1013860138599).

Almost surely, 2^{2027720277197} is an apocalyptic number.

It is an amenable number.

2027720277197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2027720277197 is an equidigital number, since it uses as much as digits as its factorization.

2027720277197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2420208, while the sum is 53.

The spelling of 2027720277197 in words is "two trillion, twenty-seven billion, seven hundred twenty million, two hundred seventy-seven thousand, one hundred ninety-seven".