7656361728 has 36 divisors (see below), whose sum is σ = 20377089768. Its totient is φ = 2552120320.

The previous prime is 7656361667. The next prime is 7656361729. The reversal of 7656361728 is 8271636567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7656361729) 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, 4983843 + ... + 4985378.

Almost surely, 2^7656361728 is an apocalyptic number.

It is an amenable number.

7656361728 is an abundant number, since it is smaller than the sum of its proper divisors (12720728040).

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

7656361728 is an equidigital number, since it uses as much as digits as its factorization.

7656361728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969240 (or 9969226 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 51.

The square root of 7656361728 is about 87500.6384433851. The cubic root of 7656361728 is about 1970.9433780381.

The spelling of 7656361728 in words is "seven billion, six hundred fifty-six million, three hundred sixty-one thousand, seven hundred twenty-eight".