7897075517 has 4 divisors (see below), whose sum is σ = 8080728480. Its totient is φ = 7713422556.

The previous prime is 7897075493. The next prime is 7897075531. The reversal of 7897075517 is 7155707987.

It is a happy number.

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: 7155707987 = 163 ⋅43900049.

It is a cyclic number.

It is not a de Polignac number, because 7897075517 - 2³² = 3602108221 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 (7897075577) 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, 91826417 + ... + 91826502.

It is an arithmetic number, because the mean of its divisors is an integer number (2020182120).

Almost surely, 2^7897075517 is an apocalyptic number.

It is an amenable number.

7897075517 is a deficient number, since it is larger than the sum of its proper divisors (183652963).

7897075517 is a wasteful number, since it uses less digits than its factorization.

7897075517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183652962.

The product of its (nonzero) digits is 4321800, while the sum is 56.

The square root of 7897075517 is about 88865.4911481392. The cubic root of 7897075517 is about 1991.3859117575.

The spelling of 7897075517 in words is "seven billion, eight hundred ninety-seven million, seventy-five thousand, five hundred seventeen".