18087669412 has 24 divisors (see below), whose sum is σ = 32198140800. Its totient is φ = 8888279136.

The previous prime is 18087669409. The next prime is 18087669421. The reversal of 18087669412 is 21496678081.

It is a self number, because there is not a number n which added to its sum of digits gives 18087669412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270389 + ... + 1284547.

It is an arithmetic number, because the mean of its divisors is an integer number (1341589200).

Almost surely, 2^18087669412 is an apocalyptic number.

It is an amenable number.

18087669412 is a deficient number, since it is larger than the sum of its proper divisors (14110471388).

18087669412 is a wasteful number, since it uses less digits than its factorization.

18087669412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19635 (or 19633 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

It can be divided in two parts, 18087669 and 412, that added together give a palindrome (18088081).

The spelling of 18087669412 in words is "eighteen billion, eighty-seven million, six hundred sixty-nine thousand, four hundred twelve".