721586428714 has 4 divisors (see below), whose sum is σ = 1082379643074. Its totient is φ = 360793214356.

The previous prime is 721586428709. The next prime is 721586428751. The reversal of 721586428714 is 417824685127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 417824685127 = 29 ⋅14407747763.

It can be written as a sum of positive squares in only one way, i.e., 712141893225 + 9444535489 = 843885^2 + 97183^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 180396607177 + ... + 180396607180.

Almost surely, 2^721586428714 is an apocalyptic number.

721586428714 is a deficient number, since it is larger than the sum of its proper divisors (360793214360).

721586428714 is a wasteful number, since it uses less digits than its factorization.

721586428714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360793214359.

The product of its digits is 6021120, while the sum is 55.

The spelling of 721586428714 in words is "seven hundred twenty-one billion, five hundred eighty-six million, four hundred twenty-eight thousand, seven hundred fourteen".