18444271707 has 12 divisors (see below), whose sum is σ = 26916384040. Its totient is φ = 12169415808.

The previous prime is 18444271691. The next prime is 18444271709. The reversal of 18444271707 is 70717244481.

18444271707 is a `hidden beast` number, since 18 + 44 + 427 + 170 + 7 = 666.

It is not a de Polignac number, because 18444271707 - 2⁴ = 18444271691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18444271709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10562857 + ... + 10564602.

Almost surely, 2^18444271707 is an apocalyptic number.

18444271707 is a deficient number, since it is larger than the sum of its proper divisors (8472112333).

18444271707 is a wasteful number, since it uses less digits than its factorization.

18444271707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21127562 (or 21127559 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The spelling of 18444271707 in words is "eighteen billion, four hundred forty-four million, two hundred seventy-one thousand, seven hundred seven".