765664328247378 has 32 divisors (see below), whose sum is σ = 1750189348704384. Its totient is φ = 218748804696192.

The previous prime is 765664328247373. The next prime is 765664328247407. The reversal of 765664328247378 is 873742823466567.

It is not an unprimeable number, because it can be changed into a prime (765664328247373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517249875 + ... + 518728022.

It is an arithmetic number, because the mean of its divisors is an integer number (54693417147012).

Almost surely, 2^{765664328247378} is an apocalyptic number.

765664328247378 is an abundant number, since it is smaller than the sum of its proper divisors (984525020457006).

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

765664328247378 is a wasteful number, since it uses less digits than its factorization.

765664328247378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035995506.

The product of its digits is 13655900160, while the sum is 78.

The spelling of 765664328247378 in words is "seven hundred sixty-five trillion, six hundred sixty-four billion, three hundred twenty-eight million, two hundred forty-seven thousand, three hundred seventy-eight".