7664638909629 has 32 divisors (see below), whose sum is σ = 11420194351104. Its totient is φ = 4542122612160.

The previous prime is 7664638909619. The next prime is 7664638909639. The reversal of 7664638909629 is 9269098364667.

It is an interprime number because it is at equal distance from previous prime (7664638909619) and next prime (7664638909639).

It is not a de Polignac number, because 7664638909629 - 2¹⁵ = 7664638876861 is a prime.

It is a super-2 number, since 2×7664638909629² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664638909619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32067177 + ... + 32305310.

It is an arithmetic number, because the mean of its divisors is an integer number (356881073472).

Almost surely, 2^{7664638909629} is an apocalyptic number.

It is an amenable number.

7664638909629 is a deficient number, since it is larger than the sum of its proper divisors (3755555441475).

7664638909629 is a wasteful number, since it uses less digits than its factorization.

7664638909629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64372617.

The product of its (nonzero) digits is 1269789696, while the sum is 75.

The spelling of 7664638909629 in words is "seven trillion, six hundred sixty-four billion, six hundred thirty-eight million, nine hundred nine thousand, six hundred twenty-nine".