11542643777 has 16 divisors (see below), whose sum is σ = 13572945792. Its totient is φ = 9609809280.

The previous prime is 11542643759. The next prime is 11542643779. The reversal of 11542643777 is 77734624511.

It is a cyclic number.

It is not a de Polignac number, because 11542643777 - 2⁸ = 11542643521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11542643779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23438 + ... + 153735.

It is an arithmetic number, because the mean of its divisors is an integer number (848309112).

Almost surely, 2^11542643777 is an apocalyptic number.

It is an amenable number.

11542643777 is a deficient number, since it is larger than the sum of its proper divisors (2030302015).

11542643777 is a wasteful number, since it uses less digits than its factorization.

11542643777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177448.

The product of its digits is 987840, while the sum is 47.

The spelling of 11542643777 in words is "eleven billion, five hundred forty-two million, six hundred forty-three thousand, seven hundred seventy-seven".