13518122004 has 36 divisors (see below), whose sum is σ = 34183012500. Its totient is φ = 4504431360.

The previous prime is 13518121997. The next prime is 13518122011. The reversal of 13518122004 is 40022181531.

It is an interprime number because it is at equal distance from previous prime (13518121997) and next prime (13518122011).

It can be written as a sum of positive squares in 2 ways, for example, as 6900624900 + 6617497104 = 83070^2 + 81348^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37372 + ... + 168620.

It is an arithmetic number, because the mean of its divisors is an integer number (949528125).

Almost surely, 2^13518122004 is an apocalyptic number.

It is an amenable number.

13518122004 is an abundant number, since it is smaller than the sum of its proper divisors (20664890496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13518122004 is a wasteful number, since it uses less digits than its factorization.

13518122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134120 (or 134115 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 13518122004 in words is "thirteen billion, five hundred eighteen million, one hundred twenty-two thousand, four".