12700166511 has 8 divisors (see below), whose sum is σ = 17211154864. Its totient is φ = 8327977920.

The previous prime is 12700166509. The next prime is 12700166543. The reversal of 12700166511 is 11566100721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12700166511 - 2¹ = 12700166509 is a prime.

It is a super-2 number, since 2×12700166511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12700166111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34699726 + ... + 34700091.

It is an arithmetic number, because the mean of its divisors is an integer number (2151394358).

Almost surely, 2^12700166511 is an apocalyptic number.

12700166511 is a deficient number, since it is larger than the sum of its proper divisors (4510988353).

12700166511 is an equidigital number, since it uses as much as digits as its factorization.

12700166511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69399881.

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 12700166511 in words is "twelve billion, seven hundred million, one hundred sixty-six thousand, five hundred eleven".