7517997157 has 8 divisors (see below), whose sum is σ = 8300265120. Its totient is φ = 6752198160.

The previous prime is 7517997139. The next prime is 7517997161.

7517997157 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7517997157 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 (7517997167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4116282 + ... + 4118107.

It is an arithmetic number, because the mean of its divisors is an integer number (1037533140).

Almost surely, 2^7517997157 is an apocalyptic number.

It is an amenable number.

7517997157 is a deficient number, since it is larger than the sum of its proper divisors (782267963).

7517997157 is a wasteful number, since it uses less digits than its factorization.

7517997157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234483.

The product of its digits is 4862025, while the sum is 58.

The square root of 7517997157 is about 86706.3847533733. The cubic root of 7517997157 is about 1958.9982696132.

The spelling of 7517997157 in words is "seven billion, five hundred seventeen million, nine hundred ninety-seven thousand, one hundred fifty-seven".