7397897508309 has 24 divisors (see below), whose sum is σ = 12390968833600. Its totient is φ = 3843063639360.

The previous prime is 7397897508301. The next prime is 7397897508347. The reversal of 7397897508309 is 9038057987937.

It is not a de Polignac number, because 7397897508309 - 2³ = 7397897508301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7397897508301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1455703384 + ... + 1455708465.

Almost surely, 2^{7397897508309} is an apocalyptic number.

It is an amenable number.

7397897508309 is a deficient number, since it is larger than the sum of its proper divisors (4993071325291).

7397897508309 is a wasteful number, since it uses less digits than its factorization.

7397897508309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911411881 (or 2911411870 counting only the distinct ones).

The product of its (nonzero) digits is 720135360, while the sum is 75.

The spelling of 7397897508309 in words is "seven trillion, three hundred ninety-seven billion, eight hundred ninety-seven million, five hundred eight thousand, three hundred nine".