77311480320000 has 3120 divisors, whose sum is σ = 315940410705920. Its totient is φ = 18811699200000.

The previous prime is 77311480319993. The next prime is 77311480320001. The reversal of 77311480320000 is 2308411377.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77311480320001) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 366405119895 + ... + 366405120105.

Almost surely, 2^{77311480320000} 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 77311480320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157970205352960).

77311480320000 is an abundant number, since it is smaller than the sum of its proper divisors (238628930385920).

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

77311480320000 is an equidigital number, since it uses as much as digits as its factorization.

77311480320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

Adding to 77311480320000 its reverse (2308411377), we get a palindrome (77313788731377).

The spelling of 77311480320000 in words is "seventy-seven trillion, three hundred eleven billion, four hundred eighty million, three hundred twenty thousand".