764032561361 has 16 divisors (see below), whose sum is σ = 793794774528. Its totient is φ = 734802969600.

The previous prime is 764032561319. The next prime is 764032561373. The reversal of 764032561361 is 163165230467.

It is a de Polignac number, because none of the positive numbers 2^k-764032561361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (764032561261) 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, 33473825 + ... + 33496641.

It is an arithmetic number, because the mean of its divisors is an integer number (49612173408).

Almost surely, 2^764032561361 is an apocalyptic number.

764032561361 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

764032561361 is a deficient number, since it is larger than the sum of its proper divisors (29762213167).

764032561361 is a wasteful number, since it uses less digits than its factorization.

764032561361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34432.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 764032561361 in words is "seven hundred sixty-four billion, thirty-two million, five hundred sixty-one thousand, three hundred sixty-one".