91166611035255 has 384 divisors, whose sum is σ = 181764155768832. Its totient is φ = 38148284461056.

The previous prime is 91166611035239. The next prime is 91166611035257. The reversal of 91166611035255 is 55253011666119.

It is not a de Polignac number, because 91166611035255 - 2⁴ = 91166611035239 is a prime.

It is a super-2 number, since 2×91166611035255² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91166611035198 and 91166611035207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91166611035257) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 181245747334 + ... + 181245747836.

It is an arithmetic number, because the mean of its divisors is an integer number (473344155648).

Almost surely, 2^{91166611035255} is an apocalyptic number.

91166611035255 is a deficient number, since it is larger than the sum of its proper divisors (90597544733577).

91166611035255 is a wasteful number, since it uses less digits than its factorization.

91166611035255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 91166611035255 in words is "ninety-one trillion, one hundred sixty-six billion, six hundred eleven million, thirty-five thousand, two hundred fifty-five".