7515115157 has 8 divisors (see below), whose sum is σ = 8199039072. Its totient is φ = 6831313200.

The previous prime is 7515115133. The next prime is 7515115193.

7515115157 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 not a de Polignac number, because 7515115157 - 2⁶ = 7515115093 is a prime.

It is a super-2 number, since 2×7515115157² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7515115157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7515115357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139682 + ... + 185852.

It is an arithmetic number, because the mean of its divisors is an integer number (1024879884).

Almost surely, 2^7515115157 is an apocalyptic number.

It is an amenable number.

7515115157 is a deficient number, since it is larger than the sum of its proper divisors (683923915).

7515115157 is a wasteful number, since it uses less digits than its factorization.

7515115157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60979.

The product of its digits is 30625, while the sum is 38.

The square root of 7515115157 is about 86689.7638536408. The cubic root of 7515115157 is about 1958.7479123932.

The spelling of 7515115157 in words is "seven billion, five hundred fifteen million, one hundred fifteen thousand, one hundred fifty-seven".