11856183870121 has 8 divisors (see below), whose sum is σ = 11867496980000. Its totient is φ = 11844873675648.

The previous prime is 11856183870079. The next prime is 11856183870127. The reversal of 11856183870121 is 12107838165811.

It is a happy number.

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 11856183870121 - 2⁹ = 11856183869609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11856183870127) 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, 7452250 + ... + 8902156.

It is an arithmetic number, because the mean of its divisors is an integer number (1483437122500).

Almost surely, 2^{11856183870121} is an apocalyptic number.

It is an amenable number.

11856183870121 is a deficient number, since it is larger than the sum of its proper divisors (11313109879).

11856183870121 is a wasteful number, since it uses less digits than its factorization.

11856183870121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457703.

The product of its (nonzero) digits is 645120, while the sum is 52.

The spelling of 11856183870121 in words is "eleven trillion, eight hundred fifty-six billion, one hundred eighty-three million, eight hundred seventy thousand, one hundred twenty-one".