69491377267127 has 2 divisors, whose sum is σ = 69491377267128. Its totient is φ = 69491377267126.

The previous prime is 69491377267087. The next prime is 69491377267201. The reversal of 69491377267127 is 72176277319496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69491377267127 - 2¹² = 69491377263031 is a prime.

It is a super-2 number, since 2×69491377267127² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69491377267427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34745688633563 + 34745688633564.

It is an arithmetic number, because the mean of its divisors is an integer number (34745688633564).

Almost surely, 2^{69491377267127} is an apocalyptic number.

69491377267127 is a deficient number, since it is larger than the sum of its proper divisors (1).

69491377267127 is an equidigital number, since it uses as much as digits as its factorization.

69491377267127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336063168, while the sum is 71.

The spelling of 69491377267127 in words is "sixty-nine trillion, four hundred ninety-one billion, three hundred seventy-seven million, two hundred sixty-seven thousand, one hundred twenty-seven".