766260644246641 has 4 divisors (see below), whose sum is σ = 766302624248692. Its totient is φ = 766218664244592.

The previous prime is 766260644246633. The next prime is 766260644246659. The reversal of 766260644246641 is 146642446062667.

It is a happy number.

766260644246641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25615087488225 + 740645556758416 = 5061135^2 + 27214804^2 .

It is a cyclic number.

It is not a de Polignac number, because 766260644246641 - 2³ = 766260644246633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766260644241641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20989973646 + ... + 20990010151.

It is an arithmetic number, because the mean of its divisors is an integer number (191575656062173).

Almost surely, 2^{766260644246641} is an apocalyptic number.

It is an amenable number.

766260644246641 is a deficient number, since it is larger than the sum of its proper divisors (41980002051).

766260644246641 is a wasteful number, since it uses less digits than its factorization.

766260644246641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41980002050.

The product of its (nonzero) digits is 334430208, while the sum is 64.

The spelling of 766260644246641 in words is "seven hundred sixty-six trillion, two hundred sixty billion, six hundred forty-four million, two hundred forty-six thousand, six hundred forty-one".