6915145120 has 96 divisors (see below), whose sum is σ = 18200563920. Its totient is φ = 2465218560.

The previous prime is 6915145117. The next prime is 6915145123. The reversal of 6915145120 is 215415196.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6915145117) and next prime (6915145123).

It can be written as a sum of positive squares in 8 ways, for example, as 2771390736 + 4143754384 = 52644^2 + 64372^2 .

It is not an unprimeable number, because it can be changed into a prime (6915145123) 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, 3000 + ... + 117640.

Almost surely, 2^6915145120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6915145120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9100281960).

6915145120 is an abundant number, since it is smaller than the sum of its proper divisors (11285418800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6915145120 is a wasteful number, since it uses less digits than its factorization.

6915145120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114698 (or 114690 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 6915145120 is about 83157.3515691788. The cubic root of 6915145120 is about 1905.1701402405.

The spelling of 6915145120 in words is "six billion, nine hundred fifteen million, one hundred forty-five thousand, one hundred twenty".