549178793101 has 2 divisors, whose sum is σ = 549178793102. Its totient is φ = 549178793100.

The previous prime is 549178793087. The next prime is 549178793161. The reversal of 549178793101 is 101397871945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358201053001 + 190977740100 = 598499^2 + 437010^2 .

It is a cyclic number.

It is not a de Polignac number, because 549178793101 - 2¹⁷ = 549178662029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549178793161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274589396550 + 274589396551.

It is an arithmetic number, because the mean of its divisors is an integer number (274589396551).

Almost surely, 2^549178793101 is an apocalyptic number.

It is an amenable number.

549178793101 is a deficient number, since it is larger than the sum of its proper divisors (1).

549178793101 is an equidigital number, since it uses as much as digits as its factorization.

549178793101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 55.

The spelling of 549178793101 in words is "five hundred forty-nine billion, one hundred seventy-eight million, seven hundred ninety-three thousand, one hundred one".