54638196517 has 2 divisors, whose sum is σ = 54638196518. Its totient is φ = 54638196516.

The previous prime is 54638196467. The next prime is 54638196521. The reversal of 54638196517 is 71569183645.

54638196517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53749321921 + 888874596 = 231839^2 + 29814^2 .

It is a cyclic number.

It is not a de Polignac number, because 54638196517 - 2¹¹ = 54638194469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54638196577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27319098258 + 27319098259.

It is an arithmetic number, because the mean of its divisors is an integer number (27319098259).

Almost surely, 2^54638196517 is an apocalyptic number.

It is an amenable number.

54638196517 is a deficient number, since it is larger than the sum of its proper divisors (1).

54638196517 is an equidigital number, since it uses as much as digits as its factorization.

54638196517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The spelling of 54638196517 in words is "fifty-four billion, six hundred thirty-eight million, one hundred ninety-six thousand, five hundred seventeen".