11115555051 has 8 divisors (see below), whose sum is σ = 14821694784. Its totient is φ = 7409892680.

The previous prime is 11115555019. The next prime is 11115555079. The reversal of 11115555051 is 15055551111.

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 11115555051 - 2⁵ = 11115555019 is a prime.

It is a super-2 number, since 2×11115555051² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11115555001) 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, 60921 + ... + 161066.

It is an arithmetic number, because the mean of its divisors is an integer number (1852711848).

Almost surely, 2^11115555051 is an apocalyptic number.

11115555051 is a deficient number, since it is larger than the sum of its proper divisors (3706139733).

11115555051 is a wasteful number, since it uses less digits than its factorization.

11115555051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238681.

The product of its (nonzero) digits is 3125, while the sum is 30.

The spelling of 11115555051 in words is "eleven billion, one hundred fifteen million, five hundred fifty-five thousand, fifty-one".