6135662420 has 24 divisors (see below), whose sum is σ = 12915514248. Its totient is φ = 2448432000.

The previous prime is 6135662411. The next prime is 6135662431. The reversal of 6135662420 is 242665316.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 390931984 + 5744730436 = 19772^2 + 75794^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 355931 + ... + 372770.

It is an arithmetic number, because the mean of its divisors is an integer number (538146427).

Almost surely, 2^6135662420 is an apocalyptic number.

It is an amenable number.

6135662420 is an abundant number, since it is smaller than the sum of its proper divisors (6779851828).

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

6135662420 is a wasteful number, since it uses less digits than its factorization.

6135662420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729131 (or 729129 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 6135662420 is about 78330.4692951600. The cubic root of 6135662420 is about 1830.7139280978.

The spelling of 6135662420 in words is "six billion, one hundred thirty-five million, six hundred sixty-two thousand, four hundred twenty".