17776790961 has 16 divisors (see below), whose sum is σ = 23783348160. Its totient is φ = 11810761920.

The previous prime is 17776790959. The next prime is 17776790971. The reversal of 17776790961 is 16909767771.

It is not a de Polignac number, because 17776790961 - 2¹ = 17776790959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17776790895 and 17776790904.

It is not an unprimeable number, because it can be changed into a prime (17776790951) 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, 1761871 + ... + 1771931.

It is an arithmetic number, because the mean of its divisors is an integer number (1486459260).

Almost surely, 2^17776790961 is an apocalyptic number.

It is an amenable number.

17776790961 is a deficient number, since it is larger than the sum of its proper divisors (6006557199).

17776790961 is a wasteful number, since it uses less digits than its factorization.

17776790961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016.

The product of its (nonzero) digits is 7001316, while the sum is 60.

The spelling of 17776790961 in words is "seventeen billion, seven hundred seventy-six million, seven hundred ninety thousand, nine hundred sixty-one".