545564686645 has 16 divisors (see below), whose sum is σ = 715462362432. Its totient is φ = 396069544960.

The previous prime is 545564686643. The next prime is 545564686669. The reversal of 545564686645 is 546686465545.

It is a happy number.

It is not a de Polignac number, because 545564686645 - 2¹ = 545564686643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545564686643) 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, 8778412 + ... + 8840341.

It is an arithmetic number, because the mean of its divisors is an integer number (44716397652).

Almost surely, 2^545564686645 is an apocalyptic number.

545564686645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545564686645 is a deficient number, since it is larger than the sum of its proper divisors (169897675787).

545564686645 is a wasteful number, since it uses less digits than its factorization.

545564686645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17619332.

The product of its digits is 414720000, while the sum is 64.

The spelling of 545564686645 in words is "five hundred forty-five billion, five hundred sixty-four million, six hundred eighty-six thousand, six hundred forty-five".