77516867242079 has 8 divisors (see below), whose sum is σ = 78709834885248. Its totient is φ = 76332575727640.

The previous prime is 77516867242007. The next prime is 77516867242127. The reversal of 77516867242079 is 97024276861577.

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 77516867242079 - 2⁸ = 77516867241823 is a prime.

It is a super-2 number, since 2×77516867242079² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77516867292079) 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, 2169014177 + ... + 2169049914.

It is an arithmetic number, because the mean of its divisors is an integer number (9838729360656).

Almost surely, 2^{77516867242079} is an apocalyptic number.

77516867242079 is a deficient number, since it is larger than the sum of its proper divisors (1192967643169).

77516867242079 is a wasteful number, since it uses less digits than its factorization.

77516867242079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338064365.

The product of its (nonzero) digits is 497871360, while the sum is 71.

The spelling of 77516867242079 in words is "seventy-seven trillion, five hundred sixteen billion, eight hundred sixty-seven million, two hundred forty-two thousand, seventy-nine".