77328470016 has 832 divisors, whose sum is σ = 282326077440. Its totient is φ = 20437401600.

The previous prime is 77328469997. The next prime is 77328470033. The reversal of 77328470016 is 61007482377.

It is a super-2 number, since 2×77328470016² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 765628366 + ... + 765628466.

Almost surely, 2^77328470016 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 77328470016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141163038720).

77328470016 is an abundant number, since it is smaller than the sum of its proper divisors (204997607424).

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

77328470016 is a wasteful number, since it uses less digits than its factorization.

77328470016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

It can be divided in two parts, 7732 and 8470016, that added together give a palindrome (8477748).

The spelling of 77328470016 in words is "seventy-seven billion, three hundred twenty-eight million, four hundred seventy thousand, sixteen".