77101666664 has 96 divisors (see below), whose sum is σ = 167557947840. Its totient is φ = 32979744000.

The previous prime is 77101666651. The next prime is 77101666711. The reversal of 77101666664 is 46666610177.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4788932 + ... + 4805004.

It is an arithmetic number, because the mean of its divisors is an integer number (1745395290).

Almost surely, 2^77101666664 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 77101666664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83778973920).

77101666664 is an abundant number, since it is smaller than the sum of its proper divisors (90456281176).

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

77101666664 is a wasteful number, since it uses less digits than its factorization.

77101666664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16279 (or 16256 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 77101666664 in words is "seventy-seven billion, one hundred one million, six hundred sixty-six thousand, six hundred sixty-four".