11125501515 has 24 divisors (see below), whose sum is σ = 19500886080. Its totient is φ = 5866929024.

The previous prime is 11125501493. The next prime is 11125501523. The reversal of 11125501515 is 51510552111.

It is a happy number.

11125501515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11125501515 - 2⁸ = 11125501259 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1384947 + ... + 1392956.

It is an arithmetic number, because the mean of its divisors is an integer number (812536920).

Almost surely, 2^11125501515 is an apocalyptic number.

11125501515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11125501515 is a deficient number, since it is larger than the sum of its proper divisors (8375384565).

11125501515 is a wasteful number, since it uses less digits than its factorization.

11125501515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778003 (or 2778000 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 27.

The spelling of 11125501515 in words is "eleven billion, one hundred twenty-five million, five hundred one thousand, five hundred fifteen".