7577115138 has 16 divisors (see below), whose sum is σ = 16838033760. Its totient is φ = 2525705028.

The previous prime is 7577115137. The next prime is 7577115151. The reversal of 7577115138 is 8315117757.

It is a junction number, because it is equal to n+sod(n) for n = 7577115093 and 7577115102.

It is not an unprimeable number, because it can be changed into a prime (7577115137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70158420 + ... + 70158527.

It is an arithmetic number, because the mean of its divisors is an integer number (1052377110).

Almost surely, 2^7577115138 is an apocalyptic number.

7577115138 is an abundant number, since it is smaller than the sum of its proper divisors (9260918622).

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

7577115138 is a wasteful number, since it uses less digits than its factorization.

7577115138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140316958 (or 140316952 counting only the distinct ones).

The product of its digits is 205800, while the sum is 45.

The square root of 7577115138 is about 87046.6262298545. The cubic root of 7577115138 is about 1964.1197479192.

It can be divided in two parts, 75771 and 15138, that added together give a palindrome (90909).

The spelling of 7577115138 in words is "seven billion, five hundred seventy-seven million, one hundred fifteen thousand, one hundred thirty-eight".