11115551406 has 32 divisors (see below), whose sum is σ = 22539783168. Its totient is φ = 3654048960.

The previous prime is 11115551401. The next prime is 11115551407. The reversal of 11115551406 is 60415551111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115551401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104346 + ... + 181986.

It is an arithmetic number, because the mean of its divisors is an integer number (704368224).

Almost surely, 2^11115551406 is an apocalyptic number.

11115551406 is an abundant number, since it is smaller than the sum of its proper divisors (11424231762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11115551406 is a wasteful number, since it uses less digits than its factorization.

11115551406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77976.

The product of its (nonzero) digits is 3000, while the sum is 30.

The spelling of 11115551406 in words is "eleven billion, one hundred fifteen million, five hundred fifty-one thousand, four hundred six".