11667000491 has 4 divisors (see below), whose sum is σ = 11915234592. Its totient is φ = 11418766392.

The previous prime is 11667000461. The next prime is 11667000509. The reversal of 11667000491 is 19400076611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19400076611 = 29 ⋅668968159.

It is a cyclic number.

It is not a de Polignac number, because 11667000491 - 2³⁰ = 10593258667 is a prime.

It is a super-2 number, since 2×11667000491² (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 (11667000461) 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, 124116980 + ... + 124117073.

It is an arithmetic number, because the mean of its divisors is an integer number (2978808648).

Almost surely, 2^11667000491 is an apocalyptic number.

11667000491 is a deficient number, since it is larger than the sum of its proper divisors (248234101).

11667000491 is an equidigital number, since it uses as much as digits as its factorization.

11667000491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248234100.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 11667000491 in words is "eleven billion, six hundred sixty-seven million, four hundred ninety-one", and thus it is an aban number.