11451670667 has 4 divisors (see below), whose sum is σ = 11645766840. Its totient is φ = 11257574496.

The previous prime is 11451670663. The next prime is 11451670687. The reversal of 11451670667 is 76607615411.

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

It is a cyclic number.

It is not a de Polignac number, because 11451670667 - 2² = 11451670663 is a prime.

It is a super-2 number, since 2×11451670667² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11451670663) 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, 97047998 + ... + 97048115.

It is an arithmetic number, because the mean of its divisors is an integer number (2911441710).

Almost surely, 2^11451670667 is an apocalyptic number.

11451670667 is a deficient number, since it is larger than the sum of its proper divisors (194096173).

11451670667 is an equidigital number, since it uses as much as digits as its factorization.

11451670667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194096172.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 11451670667 in words is "eleven billion, four hundred fifty-one million, six hundred seventy thousand, six hundred sixty-seven".