7973968501 has 4 divisors (see below), whose sum is σ = 7974297900. Its totient is φ = 7973639104.

The previous prime is 7973968487. The next prime is 7973968543. The reversal of 7973968501 is 1058693797.

7973968501 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 543356100 + 7430612401 = 23310^2 + 86201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7973968501 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 (7973968571) 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, 125236 + ... + 177853.

It is an arithmetic number, because the mean of its divisors is an integer number (1993574475).

Almost surely, 2^7973968501 is an apocalyptic number.

It is an amenable number.

7973968501 is a deficient number, since it is larger than the sum of its proper divisors (329399).

7973968501 is a wasteful number, since it uses less digits than its factorization.

7973968501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329398.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 7973968501 is about 89297.0800250490. The cubic root of 7973968501 is about 1997.8283512410.

It can be divided in two parts, 79739 and 68501, that added together give a triangular number (148240 = T₅₄₄).

The spelling of 7973968501 in words is "seven billion, nine hundred seventy-three million, nine hundred sixty-eight thousand, five hundred one".