726621247672 has 8 divisors (see below), whose sum is σ = 1362414839400. Its totient is φ = 363310623832.

The previous prime is 726621247637. The next prime is 726621247673. The reversal of 726621247672 is 276742126627.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726621247673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45413827972 + ... + 45413827987.

It is an arithmetic number, because the mean of its divisors is an integer number (170301854925).

Almost surely, 2^726621247672 is an apocalyptic number.

It is an amenable number.

726621247672 is a deficient number, since it is larger than the sum of its proper divisors (635793591728).

726621247672 is a wasteful number, since it uses less digits than its factorization.

726621247672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90827655965 (or 90827655961 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 52.

The spelling of 726621247672 in words is "seven hundred twenty-six billion, six hundred twenty-one million, two hundred forty-seven thousand, six hundred seventy-two".