8640924120629 has 4 divisors (see below), whose sum is σ = 8640978875340. Its totient is φ = 8640869365920.

The previous prime is 8640924120553. The next prime is 8640924120637. The reversal of 8640924120629 is 9260214290468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5543317080625 + 3097607040004 = 2354425^2 + 1760002^2 .

It is a cyclic number.

It is not a de Polignac number, because 8640924120629 - 2¹² = 8640924116533 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 (8640924120229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27139952 + ... + 27456489.

It is an arithmetic number, because the mean of its divisors is an integer number (2160244718835).

Almost surely, 2^{8640924120629} is an apocalyptic number.

It is an amenable number.

8640924120629 is a deficient number, since it is larger than the sum of its proper divisors (54754711).

8640924120629 is a wasteful number, since it uses less digits than its factorization.

8640924120629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54754710.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 8640924120629 in words is "eight trillion, six hundred forty billion, nine hundred twenty-four million, one hundred twenty thousand, six hundred twenty-nine".