11540312015 has 16 divisors (see below), whose sum is σ = 14109322176. Its totient is φ = 9059904000.

The previous prime is 11540312009. The next prime is 11540312041. The reversal of 11540312015 is 51021304511.

It is not a de Polignac number, because 11540312015 - 2⁸ = 11540311759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44051 + ... + 158180.

It is an arithmetic number, because the mean of its divisors is an integer number (881832636).

Almost surely, 2^11540312015 is an apocalyptic number.

11540312015 is a deficient number, since it is larger than the sum of its proper divisors (2569010161).

11540312015 is a wasteful number, since it uses less digits than its factorization.

11540312015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202450.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 11540312015 its reverse (51021304511), we get a palindrome (62561616526).

The spelling of 11540312015 in words is "eleven billion, five hundred forty million, three hundred twelve thousand, fifteen".