97503983809 has 4 divisors (see below), whose sum is σ = 99578536704. Its totient is φ = 95429430916.

The previous prime is 97503983767. The next prime is 97503983813. The reversal of 97503983809 is 90838930579.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90838930579 = 171401 ⋅529979.

It is a cyclic number.

It is not a de Polignac number, because 97503983809 - 2²³ = 97495595201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97503983869) 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, 1037276377 + ... + 1037276470.

It is an arithmetic number, because the mean of its divisors is an integer number (24894634176).

Almost surely, 2^97503983809 is an apocalyptic number.

It is an amenable number.

97503983809 is a deficient number, since it is larger than the sum of its proper divisors (2074552895).

97503983809 is a wasteful number, since it uses less digits than its factorization.

97503983809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074552894.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 97503983809 in words is "ninety-seven billion, five hundred three million, nine hundred eighty-three thousand, eight hundred nine".