545564686643 has 2 divisors, whose sum is σ = 545564686644. Its totient is φ = 545564686642.

The previous prime is 545564686627. The next prime is 545564686669. The reversal of 545564686643 is 346686465545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545564686643 - 2⁴ = 545564686627 is a prime.

It is a super-3 number, since 3×545564686643³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (545564686603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272782343321 + 272782343322.

It is an arithmetic number, because the mean of its divisors is an integer number (272782343322).

Almost surely, 2^545564686643 is an apocalyptic number.

545564686643 is a deficient number, since it is larger than the sum of its proper divisors (1).

545564686643 is an equidigital number, since it uses as much as digits as its factorization.

545564686643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832000, while the sum is 62.

The spelling of 545564686643 in words is "five hundred forty-five billion, five hundred sixty-four million, six hundred eighty-six thousand, six hundred forty-three".