91141648044 has 48 divisors (see below), whose sum is σ = 214408470528. Its totient is φ = 30131474688.

The previous prime is 91141648033. The next prime is 91141648049. The reversal of 91141648044 is 44084614119.

It is a junction number, because it is equal to n+sod(n) for n = 91141647987 and 91141648005.

It is not an unprimeable number, because it can be changed into a prime (91141648049) 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, 5772649 + ... + 5788415.

It is an arithmetic number, because the mean of its divisors is an integer number (4466843136).

Almost surely, 2^91141648044 is an apocalyptic number.

It is an amenable number.

91141648044 is an abundant number, since it is smaller than the sum of its proper divisors (123266822484).

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

91141648044 is a wasteful number, since it uses less digits than its factorization.

91141648044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19694 (or 19692 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 91141648044 in words is "ninety-one billion, one hundred forty-one million, six hundred forty-eight thousand, forty-four".