7912641109 has 6 divisors (see below), whose sum is σ = 8405470274. Its totient is φ = 7447191360.

The previous prime is 7912641103. The next prime is 7912641157. The reversal of 7912641109 is 9011462197.

It can be written as a sum of positive squares in 3 ways, for example, as 2449953009 + 5462688100 = 49497^2 + 73910^2 .

It is not a de Polignac number, because 7912641109 - 2¹⁷ = 7912510037 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 (7912641103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13689402 + ... + 13689979.

Almost surely, 2^7912641109 is an apocalyptic number.

It is an amenable number.

7912641109 is a deficient number, since it is larger than the sum of its proper divisors (492829165).

7912641109 is a wasteful number, since it uses less digits than its factorization.

7912641109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27379415 (or 27379398 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 7912641109 is about 88953.0275426306. The cubic root of 7912641109 is about 1992.6934319540.

The spelling of 7912641109 in words is "seven billion, nine hundred twelve million, six hundred forty-one thousand, one hundred nine".