91106029488 has 40 divisors (see below), whose sum is σ = 235435576000. Its totient is φ = 30358569024.

The previous prime is 91106029471. The next prime is 91106029489. The reversal of 91106029488 is 88492060119.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (91106029489) 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, 169438 + ... + 459261.

It is an arithmetic number, because the mean of its divisors is an integer number (5885889400).

Almost surely, 2^91106029488 is an apocalyptic number.

It is an amenable number.

91106029488 is an abundant number, since it is smaller than the sum of its proper divisors (144329546512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91106029488 is a wasteful number, since it uses less digits than its factorization.

91106029488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631729 (or 631723 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 91106029488 in words is "ninety-one billion, one hundred six million, twenty-nine thousand, four hundred eighty-eight".