77399487360 has 768 divisors, whose sum is σ = 308216664000. Its totient is φ = 18226446336.

The previous prime is 77399487301. The next prime is 77399487377. The reversal of 77399487360 is 6378499377.

77399487360 is a `hidden beast` number, since 7 + 7 + 3 + 99 + 487 + 3 + 60 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 710086986 + ... + 710087094.

Almost surely, 2^77399487360 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 77399487360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154108332000).

77399487360 is an abundant number, since it is smaller than the sum of its proper divisors (230817176640).

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

77399487360 is a wasteful number, since it uses less digits than its factorization.

77399487360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 48009024, while the sum is 63.

The spelling of 77399487360 in words is "seventy-seven billion, three hundred ninety-nine million, four hundred eighty-seven thousand, three hundred sixty".