77714559616 has 64 divisors (see below), whose sum is σ = 156146316480. Its totient is φ = 38526271488.

The previous prime is 77714559607. The next prime is 77714559617. The reversal of 77714559616 is 61695541777.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (77714559617) 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, 7579005 + ... + 7589251.

It is an arithmetic number, because the mean of its divisors is an integer number (2439786195).

Almost surely, 2^77714559616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77714559616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78073158240).

77714559616 is an abundant number, since it is smaller than the sum of its proper divisors (78431756864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77714559616 is a wasteful number, since it uses less digits than its factorization.

77714559616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10761 (or 10749 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 58.

The spelling of 77714559616 in words is "seventy-seven billion, seven hundred fourteen million, five hundred fifty-nine thousand, six hundred sixteen".