77240868879 has 8 divisors (see below), whose sum is σ = 102990089520. Its totient is φ = 51492780416.

The previous prime is 77240868847. The next prime is 77240868889. The reversal of 77240868879 is 97886804277.

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 77240868879 - 2⁵ = 77240868847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77240868839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108474 + ... + 407735.

It is an arithmetic number, because the mean of its divisors is an integer number (12873761190).

Almost surely, 2^77240868879 is an apocalyptic number.

77240868879 is a deficient number, since it is larger than the sum of its proper divisors (25749220641).

77240868879 is a wasteful number, since it uses less digits than its factorization.

77240868879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566089.

The product of its (nonzero) digits is 75866112, while the sum is 66.

The spelling of 77240868879 in words is "seventy-seven billion, two hundred forty million, eight hundred sixty-eight thousand, eight hundred seventy-nine".