77317061894 has 8 divisors (see below), whose sum is σ = 117443638560. Its totient is φ = 38169182376.

The previous prime is 77317061891. The next prime is 77317061897. The reversal of 77317061894 is 49816071377.

It is an interprime number because it is at equal distance from previous prime (77317061891) and next prime (77317061897).

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

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 3 ways as a sum of consecutive naturals, for example, 244674089 + ... + 244674404.

It is an arithmetic number, because the mean of its divisors is an integer number (14680454820).

Almost surely, 2^77317061894 is an apocalyptic number.

77317061894 is a deficient number, since it is larger than the sum of its proper divisors (40126576666).

77317061894 is a wasteful number, since it uses less digits than its factorization.

77317061894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489348574.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 77317061894 in words is "seventy-seven billion, three hundred seventeen million, sixty-one thousand, eight hundred ninety-four".