496509209091 has 96 divisors (see below), whose sum is σ = 870052884480. Its totient is φ = 266701248000.

The previous prime is 496509209059. The next prime is 496509209111. The reversal of 496509209091 is 190902905694.

496509209091 is a `hidden beast` number, since 49 + 6 + 509 + 2 + 0 + 9 + 0 + 91 = 666.

It is not a de Polignac number, because 496509209091 - 2⁵ = 496509209059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (496509209891) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 159187030 + ... + 159190148.

It is an arithmetic number, because the mean of its divisors is an integer number (9063050880).

Almost surely, 2^496509209091 is an apocalyptic number.

496509209091 is a deficient number, since it is larger than the sum of its proper divisors (373543675389).

496509209091 is a wasteful number, since it uses less digits than its factorization.

496509209091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017 (or 5014 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

It can be divided in two parts, 496509 and 209091, that added together give a square (705600 = 840²).

The spelling of 496509209091 in words is "four hundred ninety-six billion, five hundred nine million, two hundred nine thousand, ninety-one".