11745542278131 has 16 divisors (see below), whose sum is σ = 15822755099424. Its totient is φ = 7749351419904.

The previous prime is 11745542278121. The next prime is 11745542278139. The reversal of 11745542278131 is 13187224554711.

It is a de Polignac number, because none of the positive numbers 2^k-11745542278131 is a prime.

It is a super-2 number, since 2×11745542278131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11745542278139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7343871 + ... + 8799063.

It is an arithmetic number, because the mean of its divisors is an integer number (988922193714).

Almost surely, 2^{11745542278131} is an apocalyptic number.

11745542278131 is a deficient number, since it is larger than the sum of its proper divisors (4077212821293).

11745542278131 is a wasteful number, since it uses less digits than its factorization.

11745542278131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483030.

The product of its digits is 1881600, while the sum is 51.

The spelling of 11745542278131 in words is "eleven trillion, seven hundred forty-five billion, five hundred forty-two million, two hundred seventy-eight thousand, one hundred thirty-one".