7857897097 has 16 divisors (see below), whose sum is σ = 8539074432. Its totient is φ = 7203562240.

The previous prime is 7857897083. The next prime is 7857897109. The reversal of 7857897097 is 7907987587.

7857897097 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7857897097 - 2¹¹ = 7857895049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7857897037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60963 + ... + 139399.

It is an arithmetic number, because the mean of its divisors is an integer number (533692152).

Almost surely, 2^7857897097 is an apocalyptic number.

It is an amenable number.

7857897097 is a deficient number, since it is larger than the sum of its proper divisors (681177335).

7857897097 is a wasteful number, since it uses less digits than its factorization.

7857897097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78608.

The product of its (nonzero) digits is 62233920, while the sum is 67.

The square root of 7857897097 is about 88644.7804272761. The cubic root of 7857897097 is about 1988.0872757986.

The spelling of 7857897097 in words is "seven billion, eight hundred fifty-seven million, eight hundred ninety-seven thousand, ninety-seven".