721992357341 has 4 divisors (see below), whose sum is σ = 734229516000. Its totient is φ = 709755198684.

The previous prime is 721992357337. The next prime is 721992357349. The reversal of 721992357341 is 143753299127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 721992357341 - 2² = 721992357337 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 (721992357349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6118579241 + ... + 6118579358.

It is an arithmetic number, because the mean of its divisors is an integer number (183557379000).

Almost surely, 2^721992357341 is an apocalyptic number.

It is an amenable number.

721992357341 is a deficient number, since it is larger than the sum of its proper divisors (12237158659).

721992357341 is a wasteful number, since it uses less digits than its factorization.

721992357341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12237158658.

The product of its digits is 2857680, while the sum is 53.

The spelling of 721992357341 in words is "seven hundred twenty-one billion, nine hundred ninety-two million, three hundred fifty-seven thousand, three hundred forty-one".