7835682121 has 8 divisors (see below), whose sum is σ = 7878694824. Its totient is φ = 7792750080.

The previous prime is 7835682091. The next prime is 7835682131. The reversal of 7835682121 is 1212865387.

It can be written as a sum of positive squares in 4 ways, for example, as 936054025 + 6899628096 = 30595^2 + 83064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7835682121 is a prime.

It is a super-2 number, since 2×7835682121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7835682131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180061 + ... + 219301.

It is an arithmetic number, because the mean of its divisors is an integer number (984836853).

Almost surely, 2^7835682121 is an apocalyptic number.

It is an amenable number.

7835682121 is a deficient number, since it is larger than the sum of its proper divisors (43012703).

7835682121 is a wasteful number, since it uses less digits than its factorization.

7835682121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40331.

The product of its digits is 161280, while the sum is 43.

The square root of 7835682121 is about 88519.3883903408. The cubic root of 7835682121 is about 1986.2120074827.

The spelling of 7835682121 in words is "seven billion, eight hundred thirty-five million, six hundred eighty-two thousand, one hundred twenty-one".