11555140516251 has 24 divisors (see below), whose sum is σ = 16265034987264. Its totient is φ = 7295911896240.

The previous prime is 11555140516223. The next prime is 11555140516331. The reversal of 11555140516251 is 15261504155511.

It is not a de Polignac number, because 11555140516251 - 2⁴³ = 2759047494043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11555140516201) 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, 2307186 + ... + 5332296.

It is an arithmetic number, because the mean of its divisors is an integer number (677709791136).

Almost surely, 2^{11555140516251} is an apocalyptic number.

11555140516251 is a deficient number, since it is larger than the sum of its proper divisors (4709894471013).

11555140516251 is a wasteful number, since it uses less digits than its factorization.

11555140516251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028679 (or 3028660 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 42.

The spelling of 11555140516251 in words is "eleven trillion, five hundred fifty-five billion, one hundred forty million, five hundred sixteen thousand, two hundred fifty-one".