18527811412 has 24 divisors (see below), whose sum is σ = 35701858080. Its totient is φ = 8343022560.

The previous prime is 18527811409. The next prime is 18527811431. The reversal of 18527811412 is 21411872581.

It is a happy number.

It is a congruent number.

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, 1962987 + ... + 1972402.

It is an arithmetic number, because the mean of its divisors is an integer number (1487577420).

Almost surely, 2^18527811412 is an apocalyptic number.

It is an amenable number.

18527811412 is a deficient number, since it is larger than the sum of its proper divisors (17174046668).

18527811412 is a wasteful number, since it uses less digits than its factorization.

18527811412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935511 (or 3935509 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The spelling of 18527811412 in words is "eighteen billion, five hundred twenty-seven million, eight hundred eleven thousand, four hundred twelve".