7129397643 has 8 divisors (see below), whose sum is σ = 9560811408. Its totient is φ = 4725457824.

The previous prime is 7129397567. The next prime is 7129397657. The reversal of 7129397643 is 3467939217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7129397643 - 2¹³ = 7129389451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7129397843) 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 7 ways as a sum of consecutive naturals, for example, 6867880 + ... + 6868917.

It is an arithmetic number, because the mean of its divisors is an integer number (1195101426).

Almost surely, 2^7129397643 is an apocalyptic number.

7129397643 is a deficient number, since it is larger than the sum of its proper divisors (2431413765).

7129397643 is a wasteful number, since it uses less digits than its factorization.

7129397643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13736973.

The product of its digits is 1714608, while the sum is 51.

The square root of 7129397643 is about 84435.7604513633. The cubic root of 7129397643 is about 1924.6463750719.

The spelling of 7129397643 in words is "seven billion, one hundred twenty-nine million, three hundred ninety-seven thousand, six hundred forty-three".