11505400151 has 32 divisors (see below), whose sum is σ = 13492293120. Its totient is φ = 9608772096.

The previous prime is 11505400129. The next prime is 11505400169. The reversal of 11505400151 is 15100450511.

It is not a de Polignac number, because 11505400151 - 2¹⁰ = 11505399127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505400111) 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, 13911800 + ... + 13912626.

It is an arithmetic number, because the mean of its divisors is an integer number (421634160).

Almost surely, 2^11505400151 is an apocalyptic number.

11505400151 is a deficient number, since it is larger than the sum of its proper divisors (1986892969).

11505400151 is a wasteful number, since it uses less digits than its factorization.

11505400151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 500, while the sum is 23.

Adding to 11505400151 its reverse (15100450511), we get a palindrome (26605850662).

The spelling of 11505400151 in words is "eleven billion, five hundred five million, four hundred thousand, one hundred fifty-one".