91166611035256 has 16 divisors (see below), whose sum is σ = 171796377582000. Its totient is φ = 45354243680064.

The previous prime is 91166611035239. The next prime is 91166611035257. The reversal of 91166611035256 is 65253011666119.

It is a super-2 number, since 2×91166611035256² (a number of 29 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 28632728005 + ... + 28632731188.

It is an arithmetic number, because the mean of its divisors is an integer number (10737273598875).

Almost surely, 2^{91166611035256} is an apocalyptic number.

It is an amenable number.

91166611035256 is a deficient number, since it is larger than the sum of its proper divisors (80629766546744).

91166611035256 is a wasteful number, since it uses less digits than its factorization.

91166611035256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57265459398 (or 57265459394 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 52.

The spelling of 91166611035256 in words is "ninety-one trillion, one hundred sixty-six billion, six hundred eleven million, thirty-five thousand, two hundred fifty-six".