91156134026 has 16 divisors (see below), whose sum is σ = 140887180896. Its totient is φ = 44201766096.

The previous prime is 91156134001. The next prime is 91156134029. The reversal of 91156134026 is 62043165119.

It is not an unprimeable number, because it can be changed into a prime (91156134029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983536 + ... + 2028971.

It is an arithmetic number, because the mean of its divisors is an integer number (8805448806).

Almost surely, 2^91156134026 is an apocalyptic number.

91156134026 is a deficient number, since it is larger than the sum of its proper divisors (49731046870).

91156134026 is a wasteful number, since it uses less digits than its factorization.

91156134026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012853.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 91156134026 in words is "ninety-one billion, one hundred fifty-six million, one hundred thirty-four thousand, twenty-six".