545500909191 has 16 divisors (see below), whose sum is σ = 859902912000. Its totient is φ = 300966018528.

The previous prime is 545500909169. The next prime is 545500909199. The reversal of 545500909191 is 191909005545.

It is not a de Polignac number, because 545500909191 - 2¹⁹ = 545500384903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545500909191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545500909199) 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, 447865491 + ... + 447866708.

It is an arithmetic number, because the mean of its divisors is an integer number (53743932000).

Almost surely, 2^545500909191 is an apocalyptic number.

545500909191 is a deficient number, since it is larger than the sum of its proper divisors (314402002809).

545500909191 is a wasteful number, since it uses less digits than its factorization.

545500909191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895732238.

The product of its (nonzero) digits is 364500, while the sum is 48.

The spelling of 545500909191 in words is "five hundred forty-five billion, five hundred million, nine hundred nine thousand, one hundred ninety-one".