18119610081 has 12 divisors (see below), whose sum is σ = 27017053440. Its totient is φ = 11690070840.

The previous prime is 18119610079. The next prime is 18119610107. The reversal of 18119610081 is 18001691181.

It is not a de Polignac number, because 18119610081 - 2¹ = 18119610079 is a prime.

It is a super-2 number, since 2×18119610081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18119610581) 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, 32472141 + ... + 32472698.

It is an arithmetic number, because the mean of its divisors is an integer number (2251421120).

Almost surely, 2^18119610081 is an apocalyptic number.

It is an amenable number.

18119610081 is a deficient number, since it is larger than the sum of its proper divisors (8897443359).

18119610081 is a wasteful number, since it uses less digits than its factorization.

18119610081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64944876 (or 64944873 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 36.

The spelling of 18119610081 in words is "eighteen billion, one hundred nineteen million, six hundred ten thousand, eighty-one".