74729799513 has 12 divisors (see below), whose sum is σ = 107998452900. Its totient is φ = 49794292896.

The previous prime is 74729799511. The next prime is 74729799553. The reversal of 74729799513 is 31599792747.

74729799513 is a `hidden beast` number, since 7 + 4 + 7 + 29 + 7 + 99 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20992532544 + 53737266969 = 144888^2 + 231813^2 .

It is not a de Polignac number, because 74729799513 - 2¹ = 74729799511 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74729799511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2112606 + ... + 2147687.

It is an arithmetic number, because the mean of its divisors is an integer number (8999871075).

Almost surely, 2^74729799513 is an apocalyptic number.

It is an amenable number.

74729799513 is a deficient number, since it is larger than the sum of its proper divisors (33268653387).

74729799513 is a wasteful number, since it uses less digits than its factorization.

74729799513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262248 (or 4262245 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The spelling of 74729799513 in words is "seventy-four billion, seven hundred twenty-nine million, seven hundred ninety-nine thousand, five hundred thirteen".