55020164915977 has 2 divisors, whose sum is σ = 55020164915978. Its totient is φ = 55020164915976.

The previous prime is 55020164915951. The next prime is 55020164915983. The reversal of 55020164915977 is 77951946102055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47939158763721 + 7081006152256 = 6923811^2 + 2661016^2 .

It is a cyclic number.

It is not a de Polignac number, because 55020164915977 - 2¹¹ = 55020164913929 is a prime.

It is not a weakly prime, because it can be changed into another prime (55020164915077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27510082457988 + 27510082457989.

It is an arithmetic number, because the mean of its divisors is an integer number (27510082457989).

Almost surely, 2^{55020164915977} is an apocalyptic number.

It is an amenable number.

55020164915977 is a deficient number, since it is larger than the sum of its proper divisors (1).

55020164915977 is an equidigital number, since it uses as much as digits as its factorization.

55020164915977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814000, while the sum is 61.

The spelling of 55020164915977 in words is "fifty-five trillion, twenty billion, one hundred sixty-four million, nine hundred fifteen thousand, nine hundred seventy-seven".