7967666739 has 48 divisors (see below), whose sum is σ = 11850624000. Its totient is φ = 4751315712.

The previous prime is 7967666731. The next prime is 7967666747. The reversal of 7967666739 is 9376667697.

It is an interprime number because it is at equal distance from previous prime (7967666731) and next prime (7967666747).

It is not a de Polignac number, because 7967666739 - 2³ = 7967666731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7967666739.

It is not an unprimeable number, because it can be changed into a prime (7967666731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1965787 + ... + 1969835.

It is an arithmetic number, because the mean of its divisors is an integer number (246888000).

Almost surely, 2^7967666739 is an apocalyptic number.

7967666739 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

7967666739 is a deficient number, since it is larger than the sum of its proper divisors (3882957261).

7967666739 is a wasteful number, since it uses less digits than its factorization.

7967666739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192 (or 4173 counting only the distinct ones).

The product of its digits is 108020304, while the sum is 66.

The square root of 7967666739 is about 89261.7876753541. The cubic root of 7967666739 is about 1997.3019234114.

The spelling of 7967666739 in words is "seven billion, nine hundred sixty-seven million, six hundred sixty-six thousand, seven hundred thirty-nine".