7720540159396 has 27 divisors (see below), whose sum is σ = 13599087182499. Its totient is φ = 3835248912768.

The previous prime is 7720540159337. The next prime is 7720540159411. The reversal of 7720540159396 is 6939510450277.

It is a happy number.

The square root of 7720540159396 is 2778586.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5134438764900 + 2586101394496 = 2265930^2 + 1608136^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7720540159396.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 872471580 + ... + 872480428.

Almost surely, 2^{7720540159396} is an apocalyptic number.

7720540159396 is the 2778586-th square number.

It is an amenable number.

7720540159396 is a deficient number, since it is larger than the sum of its proper divisors (5878547023103).

7720540159396 is an frugal number, since it uses more digits than its factorization.

7720540159396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18016 (or 9008 counting only the distinct ones).

The product of its (nonzero) digits is 14288400, while the sum is 58.

The spelling of 7720540159396 in words is "seven trillion, seven hundred twenty billion, five hundred forty million, one hundred fifty-nine thousand, three hundred ninety-six".