91103621092 has 48 divisors (see below), whose sum is σ = 181784356992. Its totient is φ = 39545383680.

The previous prime is 91103621051. The next prime is 91103621093. The reversal of 91103621092 is 29012630119.

It is not an unprimeable number, because it can be changed into a prime (91103621093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546928 + ... + 693784.

It is an arithmetic number, because the mean of its divisors is an integer number (3787174104).

Almost surely, 2^91103621092 is an apocalyptic number.

91103621092 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

91103621092 is a deficient number, since it is larger than the sum of its proper divisors (90680735900).

91103621092 is a wasteful number, since it uses less digits than its factorization.

91103621092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147508 (or 147506 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 91103621092 in words is "ninety-one billion, one hundred three million, six hundred twenty-one thousand, ninety-two".