77825340230644 has 12 divisors (see below), whose sum is σ = 137266741825024. Its totient is φ = 38606271137784.

The previous prime is 77825340230623. The next prime is 77825340230647. The reversal of 77825340230644 is 44603204352877.

It is a super-2 number, since 2×77825340230644² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77825340230647) 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 3 ways as a sum of consecutive naturals, for example, 76599743814 + ... + 76599744829.

Almost surely, 2^{77825340230644} is an apocalyptic number.

It is an amenable number.

77825340230644 is a deficient number, since it is larger than the sum of its proper divisors (59441401594380).

77825340230644 is a wasteful number, since it uses less digits than its factorization.

77825340230644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153199488774 (or 153199488772 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 55.

The spelling of 77825340230644 in words is "seventy-seven trillion, eight hundred twenty-five billion, three hundred forty million, two hundred thirty thousand, six hundred forty-four".