18068445315 has 12 divisors (see below), whose sum is σ = 31318638624. Its totient is φ = 9636504144.

The previous prime is 18068445299. The next prime is 18068445361. The reversal of 18068445315 is 51354486081.

18068445315 is a `hidden beast` number, since 18 + 0 + 68 + 44 + 531 + 5 = 666.

It is not a de Polignac number, because 18068445315 - 2⁴ = 18068445299 is a prime.

It is a super-2 number, since 2×18068445315² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 401521007 = 18068445315 / (1 + 8 + 0 + 6 + 8 + 4 + 4 + 5 + 3 + 1 + 5).

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, 200760459 + ... + 200760548.

It is an arithmetic number, because the mean of its divisors is an integer number (2609886552).

Almost surely, 2^18068445315 is an apocalyptic number.

18068445315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18068445315 is a deficient number, since it is larger than the sum of its proper divisors (13250193309).

18068445315 is a wasteful number, since it uses less digits than its factorization.

18068445315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401521018 (or 401521015 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 18068445315 in words is "eighteen billion, sixty-eight million, four hundred forty-five thousand, three hundred fifteen".