11177558961 has 8 divisors (see below), whose sum is σ = 14906599680. Its totient is φ = 7450112112.

The previous prime is 11177558947. The next prime is 11177558971. The reversal of 11177558961 is 16985577111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11177558961 - 2¹⁴ = 11177542577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11177558921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382006 + ... + 410223.

It is an arithmetic number, because the mean of its divisors is an integer number (1863324960).

Almost surely, 2^11177558961 is an apocalyptic number.

It is an amenable number.

11177558961 is a deficient number, since it is larger than the sum of its proper divisors (3729040719).

11177558961 is an equidigital number, since it uses as much as digits as its factorization.

11177558961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796935.

The product of its digits is 529200, while the sum is 51.

The spelling of 11177558961 in words is "eleven billion, one hundred seventy-seven million, five hundred fifty-eight thousand, nine hundred sixty-one".