9778057673 has 4 divisors (see below), whose sum is σ = 10042329540. Its totient is φ = 9513785808.

The previous prime is 9778057657. The next prime is 9778057717. The reversal of 9778057673 is 3767508779.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8044834249 + 1733223424 = 89693^2 + 41632^2 .

It is a cyclic number.

It is not a de Polignac number, because 9778057673 - 2⁴ = 9778057657 is a prime.

It is a super-2 number, since 2×9778057673² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9778057633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132135878 + ... + 132135951.

It is an arithmetic number, because the mean of its divisors is an integer number (2510582385).

Almost surely, 2^9778057673 is an apocalyptic number.

It is an amenable number.

9778057673 is a deficient number, since it is larger than the sum of its proper divisors (264271867).

9778057673 is a wasteful number, since it uses less digits than its factorization.

9778057673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264271866.

The product of its (nonzero) digits is 15558480, while the sum is 59.

The square root of 9778057673 is about 98884.0617743830. The cubic root of 9778057673 is about 2138.3766237465.

The spelling of 9778057673 in words is "nine billion, seven hundred seventy-eight million, fifty-seven thousand, six hundred seventy-three".