54690073817 has 2 divisors, whose sum is σ = 54690073818. Its totient is φ = 54690073816.

The previous prime is 54690073787. The next prime is 54690073897. The reversal of 54690073817 is 71837009645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45362184256 + 9327889561 = 212984^2 + 96581^2 .

It is a cyclic number.

It is not a de Polignac number, because 54690073817 - 2⁸ = 54690073561 is a prime.

It is a super-4 number, since 4×54690073817⁴ (a number of 44 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (54690073897) 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, 27345036908 + 27345036909.

It is an arithmetic number, because the mean of its divisors is an integer number (27345036909).

Almost surely, 2^54690073817 is an apocalyptic number.

It is an amenable number.

54690073817 is a deficient number, since it is larger than the sum of its proper divisors (1).

54690073817 is an equidigital number, since it uses as much as digits as its factorization.

54690073817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 54690073817 in words is "fifty-four billion, six hundred ninety million, seventy-three thousand, eight hundred seventeen".