18806816473707 has 16 divisors (see below), whose sum is σ = 25092639936000. Its totient is φ = 12529437508512.

The previous prime is 18806816473663. The next prime is 18806816473717. The reversal of 18806816473707 is 70737461860881.

It is not a de Polignac number, because 18806816473707 - 2¹⁰ = 18806816472683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18806816473717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34772113 + ... + 35308829.

It is an arithmetic number, because the mean of its divisors is an integer number (1568289996000).

Almost surely, 2^{18806816473707} is an apocalyptic number.

18806816473707 is a deficient number, since it is larger than the sum of its proper divisors (6285823462293).

18806816473707 is a wasteful number, since it uses less digits than its factorization.

18806816473707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544562.

The product of its (nonzero) digits is 75866112, while the sum is 66.

The spelling of 18806816473707 in words is "eighteen trillion, eight hundred six billion, eight hundred sixteen million, four hundred seventy-three thousand, seven hundred seven".