54166607669 has 2 divisors, whose sum is σ = 54166607670. Its totient is φ = 54166607668.

The previous prime is 54166607647. The next prime is 54166607681. The reversal of 54166607669 is 96670666145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34461467044 + 19705140625 = 185638^2 + 140375^2 .

It is a cyclic number.

It is not a de Polignac number, because 54166607669 - 2⁸ = 54166607413 is a prime.

It is a super-2 number, since 2×54166607669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54166607609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27083303834 + 27083303835.

It is an arithmetic number, because the mean of its divisors is an integer number (27083303835).

Almost surely, 2^54166607669 is an apocalyptic number.

It is an amenable number.

54166607669 is a deficient number, since it is larger than the sum of its proper divisors (1).

54166607669 is an equidigital number, since it uses as much as digits as its factorization.

54166607669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 56.

It can be divided in two parts, 541666076 and 69, that added together give a palindrome (541666145).

The spelling of 54166607669 in words is "fifty-four billion, one hundred sixty-six million, six hundred seven thousand, six hundred sixty-nine".