77816359152 has 200 divisors, whose sum is σ = 262875841536. Its totient is φ = 21760078464.

The previous prime is 77816359097. The next prime is 77816359171. The reversal of 77816359152 is 25195361877.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 335133 + ... + 517635.

Almost surely, 2^77816359152 is an apocalyptic number.

77816359152 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77816359152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131437920768).

77816359152 is an abundant number, since it is smaller than the sum of its proper divisors (185059482384).

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

77816359152 is a wasteful number, since it uses less digits than its factorization.

77816359152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182577 (or 182562 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The spelling of 77816359152 in words is "seventy-seven billion, eight hundred sixteen million, three hundred fifty-nine thousand, one hundred fifty-two".