7145715215 has 8 divisors (see below), whose sum is σ = 8671205520. Its totient is φ = 5652340672.

The previous prime is 7145715211. The next prime is 7145715221. The reversal of 7145715215 is 5125175417.

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 7145715215 - 2² = 7145715211 is a prime.

It is a super-2 number, since 2×7145715215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145715211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8028449 + ... + 8029338.

It is an arithmetic number, because the mean of its divisors is an integer number (1083900690).

Almost surely, 2^7145715215 is an apocalyptic number.

7145715215 is a deficient number, since it is larger than the sum of its proper divisors (1525490305).

7145715215 is a wasteful number, since it uses less digits than its factorization.

7145715215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057881.

The product of its digits is 49000, while the sum is 38.

The square root of 7145715215 is about 84532.3323646047. The cubic root of 7145715215 is about 1926.1136157248.

The spelling of 7145715215 in words is "seven billion, one hundred forty-five million, seven hundred fifteen thousand, two hundred fifteen".