11634926821 has 8 divisors (see below), whose sum is σ = 13298437440. Its totient is φ = 9971760768.

The previous prime is 11634926783. The next prime is 11634926827. The reversal of 11634926821 is 12862943611.

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

It is a cyclic number.

It is not a de Polignac number, because 11634926821 - 2²³ = 11626538213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11634926827) 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, 9196 + ... + 152821.

It is an arithmetic number, because the mean of its divisors is an integer number (1662304680).

Almost surely, 2^11634926821 is an apocalyptic number.

It is an amenable number.

11634926821 is a deficient number, since it is larger than the sum of its proper divisors (1663510619).

11634926821 is a wasteful number, since it uses less digits than its factorization.

11634926821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172283.

The product of its digits is 124416, while the sum is 43.

The spelling of 11634926821 in words is "eleven billion, six hundred thirty-four million, nine hundred twenty-six thousand, eight hundred twenty-one".