721429371443 has 16 divisors (see below), whose sum is σ = 787691402496. Its totient is φ = 655280535840.

The previous prime is 721429371431. The next prime is 721429371469. The reversal of 721429371443 is 344173924127.

It is a cyclic number.

It is not a de Polignac number, because 721429371443 - 2⁶ = 721429371379 is a prime.

It is a super-4 number, since 4×721429371443⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721429371643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122960996 + ... + 122966862.

It is an arithmetic number, because the mean of its divisors is an integer number (49230712656).

Almost surely, 2^721429371443 is an apocalyptic number.

721429371443 is a deficient number, since it is larger than the sum of its proper divisors (66262031053).

721429371443 is a wasteful number, since it uses less digits than its factorization.

721429371443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13594.

The product of its digits is 1016064, while the sum is 47.

The spelling of 721429371443 in words is "seven hundred twenty-one billion, four hundred twenty-nine million, three hundred seventy-one thousand, four hundred forty-three".