7756048513 has 4 divisors (see below), whose sum is σ = 7756296660. Its totient is φ = 7755800368.

The previous prime is 7756048493. The next prime is 7756048519. The reversal of 7756048513 is 3158406577.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3158406577 = 61 ⋅51777157.

It can be written as a sum of positive squares in 2 ways, for example, as 6375703104 + 1380345409 = 79848^2 + 37153^2 .

It is a cyclic number.

It is not a de Polignac number, because 7756048513 - 2²⁵ = 7722494081 is a prime.

It is a super-2 number, since 2×7756048513² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7756048519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69058 + ... + 142411.

It is an arithmetic number, because the mean of its divisors is an integer number (1939074165).

Almost surely, 2^7756048513 is an apocalyptic number.

It is an amenable number.

7756048513 is a deficient number, since it is larger than the sum of its proper divisors (248147).

7756048513 is a wasteful number, since it uses less digits than its factorization.

7756048513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248146.

The product of its (nonzero) digits is 705600, while the sum is 46.

The square root of 7756048513 is about 88068.4308535130. The cubic root of 7756048513 is about 1979.4604958876.

The spelling of 7756048513 in words is "seven billion, seven hundred fifty-six million, forty-eight thousand, five hundred thirteen".