2061967097591 has 2 divisors, whose sum is σ = 2061967097592. Its totient is φ = 2061967097590.

The previous prime is 2061967097573. The next prime is 2061967097611. The reversal of 2061967097591 is 1957907691602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2061967097591 - 2⁶ = 2061967097527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061967097891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030983548795 + 1030983548796.

It is an arithmetic number, because the mean of its divisors is an integer number (1030983548796).

Almost surely, 2^{2061967097591} is an apocalyptic number.

2061967097591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061967097591 is an equidigital number, since it uses as much as digits as its factorization.

2061967097591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12859560, while the sum is 62.

The spelling of 2061967097591 in words is "two trillion, sixty-one billion, nine hundred sixty-seven million, ninety-seven thousand, five hundred ninety-one".