12016649165401 has 4 divisors (see below), whose sum is σ = 12016766506932. Its totient is φ = 12016531823872.

The previous prime is 12016649165357. The next prime is 12016649165441. The reversal of 12016649165401 is 10456194661021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3966809139225 + 8049840026176 = 1991685^2 + 2837224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12016649165401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12016649165441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58517020 + ... + 58722013.

It is an arithmetic number, because the mean of its divisors is an integer number (3004191626733).

Almost surely, 2^{12016649165401} is an apocalyptic number.

It is an amenable number.

12016649165401 is a deficient number, since it is larger than the sum of its proper divisors (117341531).

12016649165401 is a wasteful number, since it uses less digits than its factorization.

12016649165401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117341530.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 12016649165401 in words is "twelve trillion, sixteen billion, six hundred forty-nine million, one hundred sixty-five thousand, four hundred one".