11777561354 has 32 divisors (see below), whose sum is σ = 20118067200. Its totient is φ = 5132131200.

The previous prime is 11777561347. The next prime is 11777561357. The reversal of 11777561354 is 45316577711.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11777561299 and 11777561308.

It is not an unprimeable number, because it can be changed into a prime (11777561357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145154 + ... + 211245.

It is an arithmetic number, because the mean of its divisors is an integer number (628689600).

Almost surely, 2^11777561354 is an apocalyptic number.

11777561354 is a deficient number, since it is larger than the sum of its proper divisors (8340505846).

11777561354 is a wasteful number, since it uses less digits than its factorization.

11777561354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356486.

The product of its digits is 617400, while the sum is 47.

The spelling of 11777561354 in words is "eleven billion, seven hundred seventy-seven million, five hundred sixty-one thousand, three hundred fifty-four".