721854414044 has 6 divisors (see below), whose sum is σ = 1263245224584. Its totient is φ = 360927207020.

The previous prime is 721854414041. The next prime is 721854414089. The reversal of 721854414044 is 440414458127.

It is a junction number, because it is equal to n+sod(n) for n = 721854413986 and 721854414004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721854414041) by changing a digit.

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, 90231801752 + ... + 90231801759.

It is an arithmetic number, because the mean of its divisors is an integer number (210540870764).

Almost surely, 2^721854414044 is an apocalyptic number.

It is an amenable number.

721854414044 is a deficient number, since it is larger than the sum of its proper divisors (541390810540).

721854414044 is a wasteful number, since it uses less digits than its factorization.

721854414044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180463603515 (or 180463603513 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 44.

The spelling of 721854414044 in words is "seven hundred twenty-one billion, eight hundred fifty-four million, four hundred fourteen thousand, forty-four".