91156965466 has 24 divisors (see below), whose sum is σ = 159116949396. Its totient is φ = 39053185920.

The previous prime is 91156965457. The next prime is 91156965469. The reversal of 91156965466 is 66456965119.

It can be written as a sum of positive squares in 2 ways, for example, as 74540466441 + 16616499025 = 273021^2 + 128905^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91156965466.

It is not an unprimeable number, because it can be changed into a prime (91156965469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107826 + ... + 440386.

Almost surely, 2^91156965466 is an apocalyptic number.

91156965466 is a deficient number, since it is larger than the sum of its proper divisors (67959983930).

91156965466 is a wasteful number, since it uses less digits than its factorization.

91156965466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335374 (or 335367 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 58.

The spelling of 91156965466 in words is "ninety-one billion, one hundred fifty-six million, nine hundred sixty-five thousand, four hundred sixty-six".