11851551411 has 32 divisors (see below), whose sum is σ = 19336734720. Its totient is φ = 6302309376.

The previous prime is 11851551407. The next prime is 11851551449. The reversal of 11851551411 is 11415515811.

It is not a de Polignac number, because 11851551411 - 2² = 11851551407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11851551401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154731 + ... + 218276.

It is an arithmetic number, because the mean of its divisors is an integer number (604272960).

Almost surely, 2^11851551411 is an apocalyptic number.

11851551411 is a deficient number, since it is larger than the sum of its proper divisors (7485183309).

11851551411 is a wasteful number, since it uses less digits than its factorization.

11851551411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373123.

The product of its digits is 4000, while the sum is 33.

The spelling of 11851551411 in words is "eleven billion, eight hundred fifty-one million, five hundred fifty-one thousand, four hundred eleven".