17777968064 has 28 divisors (see below), whose sum is σ = 35282809800. Its totient is φ = 8887811328.

The previous prime is 17777968007. The next prime is 17777968067. The reversal of 17777968064 is 46086977771.

It is a super-2 number, since 2×17777968064² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17777967988 and 17777968006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17777968067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672407 + ... + 698345.

It is an arithmetic number, because the mean of its divisors is an integer number (1260100350).

Almost surely, 2^17777968064 is an apocalyptic number.

It is an amenable number.

17777968064 is a deficient number, since it is larger than the sum of its proper divisors (17504841736).

17777968064 is a wasteful number, since it uses less digits than its factorization.

17777968064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36660 (or 36650 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 62.

The spelling of 17777968064 in words is "seventeen billion, seven hundred seventy-seven million, nine hundred sixty-eight thousand, sixty-four".