77613368958881 has 8 divisors (see below), whose sum is σ = 88701341991744. Its totient is φ = 66525483150000.

The previous prime is 77613368958871. The next prime is 77613368958893. The reversal of 77613368958881 is 18885986331677.

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

It is not a de Polignac number, because 77613368958881 - 2⁶ = 77613368958817 is a prime.

It is a super-2 number, since 2×77613368958881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77613368958796 and 77613368958805.

It is not an unprimeable number, because it can be changed into a prime (77613368958871) 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, 19887995 + ... + 23468256.

It is an arithmetic number, because the mean of its divisors is an integer number (11087667748968).

Almost surely, 2^{77613368958881} is an apocalyptic number.

It is an amenable number.

77613368958881 is a deficient number, since it is larger than the sum of its proper divisors (11087973032863).

77613368958881 is a wasteful number, since it uses less digits than its factorization.

77613368958881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43611991.

The product of its digits is 2926264320, while the sum is 80.

The spelling of 77613368958881 in words is "seventy-seven trillion, six hundred thirteen billion, three hundred sixty-eight million, nine hundred fifty-eight thousand, eight hundred eighty-one".