77788856034352 has 160 divisors (see below), whose sum is σ = 159059795521536. Its totient is φ = 36806952960000.

The previous prime is 77788856034349. The next prime is 77788856034353. The reversal of 77788856034352 is 25343065888777.

It is a super-2 number, since 2×77788856034352² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77788856034353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12725149248 + ... + 12725155360.

Almost surely, 2^{77788856034352} 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 77788856034352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79529897760768).

77788856034352 is an abundant number, since it is smaller than the sum of its proper divisors (81270939487184).

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

77788856034352 is a wasteful number, since it uses less digits than its factorization.

77788856034352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339 (or 9333 counting only the distinct ones).

The product of its (nonzero) digits is 1896652800, while the sum is 73.

The spelling of 77788856034352 in words is "seventy-seven trillion, seven hundred eighty-eight billion, eight hundred fifty-six million, thirty-four thousand, three hundred fifty-two".