7921268107 has 4 divisors (see below), whose sum is σ = 7926931600. Its totient is φ = 7915604616.

The previous prime is 7921268063. The next prime is 7921268111. The reversal of 7921268107 is 7018621297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7018621297 = 59 ⋅118959683.

It is a cyclic number.

It is not a de Polignac number, because 7921268107 - 2¹⁵ = 7921235339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7921208107) 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 3 ways as a sum of consecutive naturals, for example, 2829648 + ... + 2832445.

It is an arithmetic number, because the mean of its divisors is an integer number (1981732900).

Almost surely, 2^7921268107 is an apocalyptic number.

7921268107 is a deficient number, since it is larger than the sum of its proper divisors (5663493).

7921268107 is a wasteful number, since it uses less digits than its factorization.

7921268107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663492.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 7921268107 is about 89001.5062063559. The cubic root of 7921268107 is about 1993.4173671585.

The spelling of 7921268107 in words is "seven billion, nine hundred twenty-one million, two hundred sixty-eight thousand, one hundred seven".