11421825857 has 8 divisors (see below), whose sum is σ = 12369147840. Its totient is φ = 10484321040.

The previous prime is 11421825823. The next prime is 11421825869. The reversal of 11421825857 is 75852812411.

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 11421825857 - 2⁸ = 11421825601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421855857) 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, 2451869 + ... + 2456522.

It is an arithmetic number, because the mean of its divisors is an integer number (1546143480).

Almost surely, 2^11421825857 is an apocalyptic number.

It is an amenable number.

11421825857 is a deficient number, since it is larger than the sum of its proper divisors (947321983).

11421825857 is a wasteful number, since it uses less digits than its factorization.

11421825857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908583.

The product of its digits is 179200, while the sum is 44.

The spelling of 11421825857 in words is "eleven billion, four hundred twenty-one million, eight hundred twenty-five thousand, eight hundred fifty-seven".