2061172026961 has 2 divisors, whose sum is σ = 2061172026962. Its totient is φ = 2061172026960.

The previous prime is 2061172026943. The next prime is 2061172027063. The reversal of 2061172026961 is 1696202711602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2012584846336 + 48587180625 = 1418656^2 + 220425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061172026961 - 2¹⁷ = 2061171895889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2061172026941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030586013480 + 1030586013481.

It is an arithmetic number, because the mean of its divisors is an integer number (1030586013481).

Almost surely, 2^{2061172026961} is an apocalyptic number.

It is an amenable number.

2061172026961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061172026961 is an equidigital number, since it uses as much as digits as its factorization.

2061172026961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 2061172026961 in words is "two trillion, sixty-one billion, one hundred seventy-two million, twenty-six thousand, nine hundred sixty-one".