77725809613109 has 8 divisors (see below), whose sum is σ = 88977793027200. Its totient is φ = 66510900280656.

The previous prime is 77725809613091. The next prime is 77725809613141. The reversal of 77725809613109 is 90131690852777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77725809613109 - 2³² = 77721514645813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77725809615109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9268515914 + ... + 9268524299.

It is an arithmetic number, because the mean of its divisors is an integer number (11122224128400).

Almost surely, 2^{77725809613109} is an apocalyptic number.

It is an amenable number.

77725809613109 is a deficient number, since it is larger than the sum of its proper divisors (11251983414091).

77725809613109 is a wasteful number, since it uses less digits than its factorization.

77725809613109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537040819.

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 77725809613109 in words is "seventy-seven trillion, seven hundred twenty-five billion, eight hundred nine million, six hundred thirteen thousand, one hundred nine".