77860885622616 has 144 divisors (see below), whose sum is σ = 224032153494240. Its totient is φ = 24424223984640.

The previous prime is 77860885622609. The next prime is 77860885622623. The reversal of 77860885622616 is 61622658806877.

77860885622616 is a `hidden beast` number, since 7 + 7 + 8 + 608 + 8 + 5 + 6 + 2 + 2 + 6 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (77860885622609) and next prime (77860885622623).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 190834465 + ... + 191242031.

It is an arithmetic number, because the mean of its divisors is an integer number (1555778843710).

Almost surely, 2^{77860885622616} 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 77860885622616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112016076747120).

77860885622616 is an abundant number, since it is smaller than the sum of its proper divisors (146171267871624).

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

77860885622616 is a wasteful number, since it uses less digits than its factorization.

77860885622616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416794 (or 416770 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 72.

The spelling of 77860885622616 in words is "seventy-seven trillion, eight hundred sixty billion, eight hundred eighty-five million, six hundred twenty-two thousand, six hundred sixteen".