11415205151 has 4 divisors (see below), whose sum is σ = 13045948752. Its totient is φ = 9784461552.

The previous prime is 11415205121. The next prime is 11415205157. The reversal of 11415205151 is 15150251411.

It is a happy number.

11415205151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15150251411 = 21061 ⋅719351.

It is a cyclic number.

It is not a de Polignac number, because 11415205151 - 2²² = 11411010847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11415205151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11415205157) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 815371790 + ... + 815371803.

It is an arithmetic number, because the mean of its divisors is an integer number (3261487188).

Almost surely, 2^11415205151 is an apocalyptic number.

11415205151 is a deficient number, since it is larger than the sum of its proper divisors (1630743601).

11415205151 is an equidigital number, since it uses as much as digits as its factorization.

11415205151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630743600.

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 11415205151 its reverse (15150251411), we get a palindrome (26565456562).

The spelling of 11415205151 in words is "eleven billion, four hundred fifteen million, two hundred five thousand, one hundred fifty-one".