7156506513 has 16 divisors (see below), whose sum is σ = 10295034176. Its totient is φ = 4395850560.

The previous prime is 7156506509. The next prime is 7156506517. The reversal of 7156506513 is 3156056517.

It is an interprime number because it is at equal distance from previous prime (7156506509) and next prime (7156506517).

It is not a de Polignac number, because 7156506513 - 2² = 7156506509 is a prime.

It is a super-2 number, since 2×7156506513² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7156506517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148495 + ... + 190692.

It is an arithmetic number, because the mean of its divisors is an integer number (643439636).

Almost surely, 2^7156506513 is an apocalyptic number.

It is an amenable number.

7156506513 is a deficient number, since it is larger than the sum of its proper divisors (3138527663).

7156506513 is a wasteful number, since it uses less digits than its factorization.

7156506513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339744.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 7156506513 is about 84596.1376955237. The cubic root of 7156506513 is about 1927.0827191668.

The spelling of 7156506513 in words is "seven billion, one hundred fifty-six million, five hundred six thousand, five hundred thirteen".