7130571520 has 72 divisors (see below), whose sum is σ = 17103497040. Its totient is φ = 2848296960.

The previous prime is 7130571517. The next prime is 7130571523. The reversal of 7130571520 is 251750317.

It is an interprime number because it is at equal distance from previous prime (7130571517) and next prime (7130571523).

It is a super-2 number, since 2×7130571520² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7130571523) 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, 1034646 + ... + 1041514.

It is an arithmetic number, because the mean of its divisors is an integer number (237548570).

Almost surely, 2^7130571520 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 7130571520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8551748520).

7130571520 is an abundant number, since it is smaller than the sum of its proper divisors (9972925520).

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

7130571520 is an equidigital number, since it uses as much as digits as its factorization.

7130571520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701 (or 7687 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 7130571520 is about 84442.7114675980. The cubic root of 7130571520 is about 1924.7520022341.

The spelling of 7130571520 in words is "seven billion, one hundred thirty million, five hundred seventy-one thousand, five hundred twenty".