76384781280 has 72 divisors (see below), whose sum is σ = 260663071032. Its totient is φ = 20369274624.

The previous prime is 76384781257. The next prime is 76384781299. The reversal of 76384781280 is 8218748367.

It is a happy number.

76384781280 is a `hidden beast` number, since 76 + 384 + 78 + 128 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×76384781280² (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 11 ways as a sum of consecutive naturals, for example, 26521054 + ... + 26523933.

It is an arithmetic number, because the mean of its divisors is an integer number (3620320431).

Almost surely, 2^76384781280 is an apocalyptic number.

It is an amenable number.

76384781280 is an abundant number, since it is smaller than the sum of its proper divisors (184278289752).

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

76384781280 is a wasteful number, since it uses less digits than its factorization.

76384781280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53045008 (or 53044997 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 76384781280 in words is "seventy-six billion, three hundred eighty-four million, seven hundred eighty-one thousand, two hundred eighty".