12017440851 has 64 divisors (see below), whose sum is σ = 17889500160. Its totient is φ = 7130073600.

The previous prime is 12017440829. The next prime is 12017440927. The reversal of 12017440851 is 15804471021.

It is not a de Polignac number, because 12017440851 - 2¹³ = 12017432659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12017440801) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43384125 + ... + 43384401.

It is an arithmetic number, because the mean of its divisors is an integer number (279523440).

Almost surely, 2^12017440851 is an apocalyptic number.

12017440851 is a deficient number, since it is larger than the sum of its proper divisors (5872059309).

12017440851 is a wasteful number, since it uses less digits than its factorization.

12017440851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 8960, while the sum is 33.

The spelling of 12017440851 in words is "twelve billion, seventeen million, four hundred forty thousand, eight hundred fifty-one".