77317061893 has 8 divisors (see below), whose sum is σ = 81506610720. Its totient is φ = 73139536080.

The previous prime is 77317061891. The next prime is 77317061897. The reversal of 77317061893 is 39816071377.

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 77317061893 - 2¹ = 77317061891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77317061893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77317061891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992543 + ... + 3018268.

It is an arithmetic number, because the mean of its divisors is an integer number (10188326340).

Almost surely, 2^77317061893 is an apocalyptic number.

It is an amenable number.

77317061893 is a deficient number, since it is larger than the sum of its proper divisors (4189548827).

77317061893 is a wasteful number, since it uses less digits than its factorization.

77317061893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011507.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The spelling of 77317061893 in words is "seventy-seven billion, three hundred seventeen million, sixty-one thousand, eight hundred ninety-three".