5518980174391 has 2 divisors, whose sum is σ = 5518980174392. Its totient is φ = 5518980174390.

The previous prime is 5518980174343. The next prime is 5518980174401. The reversal of 5518980174391 is 1934710898155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5518980174391 - 2⁹ = 5518980173879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5518980174791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2759490087195 + 2759490087196.

It is an arithmetic number, because the mean of its divisors is an integer number (2759490087196).

Almost surely, 2^{5518980174391} is an apocalyptic number.

5518980174391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5518980174391 is an equidigital number, since it uses as much as digits as its factorization.

5518980174391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 61.

The spelling of 5518980174391 in words is "five trillion, five hundred eighteen billion, nine hundred eighty million, one hundred seventy-four thousand, three hundred ninety-one".