11671267642 has 8 divisors (see below), whose sum is σ = 17980061076. Its totient is φ = 5677913952.

The previous prime is 11671267631. The next prime is 11671267649. The reversal of 11671267642 is 24676217611.

It can be written as a sum of positive squares in 2 ways, for example, as 11384676601 + 286591041 = 106699^2 + 16929^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11671267649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78859843 + ... + 78859990.

Almost surely, 2^11671267642 is an apocalyptic number.

11671267642 is a deficient number, since it is larger than the sum of its proper divisors (6308793434).

11671267642 is a wasteful number, since it uses less digits than its factorization.

11671267642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157719872.

The product of its digits is 169344, while the sum is 43.

The spelling of 11671267642 in words is "eleven billion, six hundred seventy-one million, two hundred sixty-seven thousand, six hundred forty-two".