7421651329 has 8 divisors (see below), whose sum is σ = 7475390208. Its totient is φ = 7368075120.

The previous prime is 7421651309. The next prime is 7421651357. The reversal of 7421651329 is 9231561247.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7421651329 - 2⁵ = 7421651297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7421651291 and 7421651300.

It is not an unprimeable number, because it can be changed into a prime (7421651309) 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 7 ways as a sum of consecutive naturals, for example, 51664 + ... + 132334.

It is an arithmetic number, because the mean of its divisors is an integer number (934423776).

Almost surely, 2^7421651329 is an apocalyptic number.

It is an amenable number.

7421651329 is a deficient number, since it is larger than the sum of its proper divisors (53738879).

7421651329 is a wasteful number, since it uses less digits than its factorization.

7421651329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81335.

The product of its digits is 90720, while the sum is 40.

The square root of 7421651329 is about 86149.0065467966. The cubic root of 7421651329 is about 1950.5938431549.

The spelling of 7421651329 in words is "seven billion, four hundred twenty-one million, six hundred fifty-one thousand, three hundred twenty-nine".