77837617000852 has 6 divisors (see below), whose sum is σ = 136215829751498. Its totient is φ = 38918808500424.

The previous prime is 77837617000823. The next prime is 77837617000853. The reversal of 77837617000852 is 25800071673877.

It can be written as a sum of positive squares in only one way, i.e., 68436010031236 + 9401606969616 = 8272606^2 + 3066204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77837617000853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9729702125103 + ... + 9729702125110.

Almost surely, 2^{77837617000852} is an apocalyptic number.

It is an amenable number.

77837617000852 is a deficient number, since it is larger than the sum of its proper divisors (58378212750646).

77837617000852 is a wasteful number, since it uses less digits than its factorization.

77837617000852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19459404250217 (or 19459404250215 counting only the distinct ones).

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 77837617000852 in words is "seventy-seven trillion, eight hundred thirty-seven billion, six hundred seventeen million, eight hundred fifty-two", and thus it is an aban number.