545991541491 has 8 divisors (see below), whose sum is σ = 794169514944. Its totient is φ = 330903964520.

The previous prime is 545991541471. The next prime is 545991541493. The reversal of 545991541491 is 194145199545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545991541491 - 2¹⁵ = 545991508723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545991541493) 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, 8272599081 + ... + 8272599146.

It is an arithmetic number, because the mean of its divisors is an integer number (99271189368).

Almost surely, 2^545991541491 is an apocalyptic number.

545991541491 is a deficient number, since it is larger than the sum of its proper divisors (248177973453).

545991541491 is a wasteful number, since it uses less digits than its factorization.

545991541491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16545198241.

The product of its digits is 5832000, while the sum is 57.

It can be divided in two parts, 54599154 and 1491, that added together give a palindrome (54600645).

The spelling of 545991541491 in words is "five hundred forty-five billion, nine hundred ninety-one million, five hundred forty-one thousand, four hundred ninety-one".