6135044021 has 4 divisors (see below), whose sum is σ = 6136057344. Its totient is φ = 6134030700.

The previous prime is 6135044017. The next prime is 6135044029. The reversal of 6135044021 is 1204405316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6135044021 - 2² = 6135044017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6135044029) 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, 497525 + ... + 509706.

It is an arithmetic number, because the mean of its divisors is an integer number (1534014336).

Almost surely, 2^6135044021 is an apocalyptic number.

It is an amenable number.

6135044021 is a deficient number, since it is larger than the sum of its proper divisors (1013323).

6135044021 is a wasteful number, since it uses less digits than its factorization.

6135044021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013322.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6135044021 is about 78326.5218237092. The cubic root of 6135044021 is about 1830.6524215795.

Adding to 6135044021 its reverse (1204405316), we get a palindrome (7339449337).

The spelling of 6135044021 in words is "six billion, one hundred thirty-five million, forty-four thousand, twenty-one".