11540311749 has 24 divisors (see below), whose sum is σ = 17064439392. Its totient is φ = 7511343840.

The previous prime is 11540311747. The next prime is 11540311759. The reversal of 11540311749 is 94711304511.

11540311749 is a `hidden beast` number, since 11 + 540 + 31 + 1 + 74 + 9 = 666.

It is not a de Polignac number, because 11540311749 - 2¹ = 11540311747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540311747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1144759 + ... + 1154795.

It is an arithmetic number, because the mean of its divisors is an integer number (711018308).

Almost surely, 2^11540311749 is an apocalyptic number.

It is an amenable number.

11540311749 is a deficient number, since it is larger than the sum of its proper divisors (5524127643).

11540311749 is a wasteful number, since it uses less digits than its factorization.

11540311749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13057 (or 13054 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 11540311749 in words is "eleven billion, five hundred forty million, three hundred eleven thousand, seven hundred forty-nine".