721342072000 has 112 divisors (see below), whose sum is σ = 1948804210080. Its totient is φ = 262306176000.

The previous prime is 721342071991. The next prime is 721342072019. The reversal of 721342072000 is 270243127.

It is a self number, because there is not a number n which added to its sum of digits gives 721342072000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010535 + ... + 4186534.

It is an arithmetic number, because the mean of its divisors is an integer number (17400037590).

Almost surely, 2^721342072000 is an apocalyptic number.

It is an amenable number.

721342072000 is an abundant number, since it is smaller than the sum of its proper divisors (1227462138080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

721342072000 is a wasteful number, since it uses less digits than its factorization.

721342072000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8197107 (or 8197087 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The spelling of 721342072000 in words is "seven hundred twenty-one billion, three hundred forty-two million, seventy-two thousand".