16666436241 has 96 divisors (see below), whose sum is σ = 30006063360. Its totient is φ = 8680089600.

The previous prime is 16666436231. The next prime is 16666436279. The reversal of 16666436241 is 14263466661.

It is not a de Polignac number, because 16666436241 - 2¹⁸ = 16666174097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16666436221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31989061 + ... + 31989581.

It is an arithmetic number, because the mean of its divisors is an integer number (312563160).

Almost surely, 2^16666436241 is an apocalyptic number.

It is an amenable number.

16666436241 is a deficient number, since it is larger than the sum of its proper divisors (13339627119).

16666436241 is a wasteful number, since it uses less digits than its factorization.

16666436241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 964 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 16666436241 in words is "sixteen billion, six hundred sixty-six million, four hundred thirty-six thousand, two hundred forty-one".