545212578877 has 2 divisors, whose sum is σ = 545212578878. Its totient is φ = 545212578876.

The previous prime is 545212578863. The next prime is 545212578893. The reversal of 545212578877 is 778875212545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 464934423321 + 80278155556 = 681861^2 + 283334^2 .

It is a cyclic number.

It is not a de Polignac number, because 545212578877 - 2¹¹ = 545212576829 is a prime.

It is a super-2 number, since 2×545212578877² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545212578847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272606289438 + 272606289439.

It is an arithmetic number, because the mean of its divisors is an integer number (272606289439).

Almost surely, 2^545212578877 is an apocalyptic number.

It is an amenable number.

545212578877 is a deficient number, since it is larger than the sum of its proper divisors (1).

545212578877 is an equidigital number, since it uses as much as digits as its factorization.

545212578877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43904000, while the sum is 61.

The spelling of 545212578877 in words is "five hundred forty-five billion, two hundred twelve million, five hundred seventy-eight thousand, eight hundred seventy-seven".