721712046254 has 4 divisors (see below), whose sum is σ = 1082568069384. Its totient is φ = 360856023126.

The previous prime is 721712046233. The next prime is 721712046331. The reversal of 721712046254 is 452640217127.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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, 180428011562 + ... + 180428011565.

It is an arithmetic number, because the mean of its divisors is an integer number (270642017346).

Almost surely, 2^721712046254 is an apocalyptic number.

721712046254 is a deficient number, since it is larger than the sum of its proper divisors (360856023130).

721712046254 is a wasteful number, since it uses less digits than its factorization.

721712046254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360856023129.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 721712046254 in words is "seven hundred twenty-one billion, seven hundred twelve million, forty-six thousand, two hundred fifty-four".