5129123652 has 36 divisors (see below), whose sum is σ = 13727950236. Its totient is φ = 1609136640.

The previous prime is 5129123647. The next prime is 5129123761. The reversal of 5129123652 is 2563219215.

It is a happy number.

5129123652 is a `hidden beast` number, since 5 + 1 + 291 + 2 + 365 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2769495876 + 2359627776 = 52626^2 + 48576^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4189849 + ... + 4191072.

It is an arithmetic number, because the mean of its divisors is an integer number (381331951).

Almost surely, 2^5129123652 is an apocalyptic number.

It is an amenable number.

5129123652 is an abundant number, since it is smaller than the sum of its proper divisors (8598826584).

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

5129123652 is a wasteful number, since it uses less digits than its factorization.

5129123652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380948 (or 8380943 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 5129123652 is about 71617.9003601753. The cubic root of 5129123652 is about 1724.5709107914.

The spelling of 5129123652 in words is "five billion, one hundred twenty-nine million, one hundred twenty-three thousand, six hundred fifty-two".