7720742503 has 8 divisors (see below), whose sum is σ = 7737795072. Its totient is φ = 7703705856.

The previous prime is 7720742459. The next prime is 7720742527. The reversal of 7720742503 is 3052470277.

7720742503 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7720742503 - 2⁹ = 7720741991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7720742543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655551 + ... + 1660207.

It is an arithmetic number, because the mean of its divisors is an integer number (967224384).

Almost surely, 2^7720742503 is an apocalyptic number.

7720742503 is a deficient number, since it is larger than the sum of its proper divisors (17052569).

7720742503 is a wasteful number, since it uses less digits than its factorization.

7720742503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961.

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 7720742503 is about 87867.7557639889. The cubic root of 7720742503 is about 1976.4523849051.

The spelling of 7720742503 in words is "seven billion, seven hundred twenty million, seven hundred forty-two thousand, five hundred three".