721948448126 has 8 divisors (see below), whose sum is σ = 1130006266704. Its totient is φ = 345279692560.

The previous prime is 721948448083. The next prime is 721948448131. The reversal of 721948448126 is 621844849127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7847265695 + ... + 7847265786.

It is an arithmetic number, because the mean of its divisors is an integer number (141250783338).

Almost surely, 2^721948448126 is an apocalyptic number.

721948448126 is a deficient number, since it is larger than the sum of its proper divisors (408057818578).

721948448126 is a wasteful number, since it uses less digits than its factorization.

721948448126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15694531506.

The product of its digits is 6193152, while the sum is 56.

The spelling of 721948448126 in words is "seven hundred twenty-one billion, nine hundred forty-eight million, four hundred forty-eight thousand, one hundred twenty-six".