545641651111 has 4 divisors (see below), whose sum is σ = 546182426800. Its totient is φ = 545100875424.

The previous prime is 545641651091. The next prime is 545641651153. The reversal of 545641651111 is 111156146545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545641651111 is a prime.

It is a super-2 number, since 2×545641651111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545641651171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270386331 + ... + 270388348.

It is an arithmetic number, because the mean of its divisors is an integer number (136545606700).

Almost surely, 2^545641651111 is an apocalyptic number.

545641651111 is a deficient number, since it is larger than the sum of its proper divisors (540775689).

545641651111 is a wasteful number, since it uses less digits than its factorization.

545641651111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540775688.

The product of its digits is 72000, while the sum is 40.

Adding to 545641651111 its reverse (111156146545), we get a palindrome (656797797656).

The spelling of 545641651111 in words is "five hundred forty-five billion, six hundred forty-one million, six hundred fifty-one thousand, one hundred eleven".