6715651121 has 4 divisors (see below), whose sum is σ = 6744473892. Its totient is φ = 6686828352.

The previous prime is 6715651093. The next prime is 6715651127. The reversal of 6715651121 is 1211565176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 780643600 + 5935007521 = 27940^2 + 77039^2 .

It is a cyclic number.

It is not a de Polignac number, because 6715651121 - 2⁶ = 6715651057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6715651127) 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, 14411036 + ... + 14411501.

It is an arithmetic number, because the mean of its divisors is an integer number (1686118473).

Almost surely, 2^6715651121 is an apocalyptic number.

It is an amenable number.

6715651121 is a deficient number, since it is larger than the sum of its proper divisors (28822771).

6715651121 is a wasteful number, since it uses less digits than its factorization.

6715651121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28822770.

The product of its digits is 12600, while the sum is 35.

The square root of 6715651121 is about 81949.0763889380. The cubic root of 6715651121 is about 1886.6704272914.

The spelling of 6715651121 in words is "six billion, seven hundred fifteen million, six hundred fifty-one thousand, one hundred twenty-one".