764221135320 has 96 divisors (see below), whose sum is σ = 2492495413200. Its totient is φ = 203072161536.

The previous prime is 764221135273. The next prime is 764221135423. The reversal of 764221135320 is 23531122467.

764221135320 is a `hidden beast` number, since 7 + 6 + 4 + 2 + 2 + 113 + 532 + 0 = 666.

764221135320 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3648715 + ... + 3852474.

Almost surely, 2^764221135320 is an apocalyptic number.

It is an amenable number.

764221135320 is an abundant number, since it is smaller than the sum of its proper divisors (1728274277880).

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

764221135320 is a wasteful number, since it uses less digits than its factorization.

764221135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7501489 (or 7501482 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 764221135320 its reverse (23531122467), we get a palindrome (787752257787).

The spelling of 764221135320 in words is "seven hundred sixty-four billion, two hundred twenty-one million, one hundred thirty-five thousand, three hundred twenty".