77331511296 has 288 divisors, whose sum is σ = 249457506480. Its totient is φ = 23792320512.

The previous prime is 77331511291. The next prime is 77331511379. The reversal of 77331511296 is 69211513377.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77331511291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6463656 + ... + 6475608.

Almost surely, 2^77331511296 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 77331511296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124728753240).

77331511296 is an abundant number, since it is smaller than the sum of its proper divisors (172125995184).

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

77331511296 is a wasteful number, since it uses less digits than its factorization.

77331511296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003 (or 11971 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The spelling of 77331511296 in words is "seventy-seven billion, three hundred thirty-one million, five hundred eleven thousand, two hundred ninety-six".