11667475646 has 4 divisors (see below), whose sum is σ = 17501213472. Its totient is φ = 5833737822.

The previous prime is 11667475643. The next prime is 11667475679. The reversal of 11667475646 is 64657476611.

It is a happy number.

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

It is a super-2 number, since 2×11667475646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11667475643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2916868910 + ... + 2916868913.

It is an arithmetic number, because the mean of its divisors is an integer number (4375303368).

Almost surely, 2^11667475646 is an apocalyptic number.

11667475646 is a deficient number, since it is larger than the sum of its proper divisors (5833737826).

11667475646 is an equidigital number, since it uses as much as digits as its factorization.

11667475646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833737825.

The product of its digits is 5080320, while the sum is 53.

The spelling of 11667475646 in words is "eleven billion, six hundred sixty-seven million, four hundred seventy-five thousand, six hundred forty-six".