6631051109 has 4 divisors (see below), whose sum is σ = 6633038016. Its totient is φ = 6629064204.

The previous prime is 6631051103. The next prime is 6631051117. The reversal of 6631051109 is 9011501366.

It is a happy number.

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 6631051109 - 2²⁴ = 6614273893 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 (6631051103) 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, 988439 + ... + 995124.

It is an arithmetic number, because the mean of its divisors is an integer number (1658259504).

Almost surely, 2^6631051109 is an apocalyptic number.

It is an amenable number.

6631051109 is a deficient number, since it is larger than the sum of its proper divisors (1986907).

6631051109 is a wasteful number, since it uses less digits than its factorization.

6631051109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986906.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 6631051109 is about 81431.2661635566. The cubic root of 6631051109 is about 1878.7145193193.

The spelling of 6631051109 in words is "six billion, six hundred thirty-one million, fifty-one thousand, one hundred nine".