721024205045 has 8 divisors (see below), whose sum is σ = 875653492896. Its totient is φ = 569869732816.

The previous prime is 721024204987. The next prime is 721024205059. The reversal of 721024205045 is 540502420127.

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

It is a cyclic number.

It is not a de Polignac number, because 721024205045 - 2¹⁸ = 721023942901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868703447 + ... + 868704276.

It is an arithmetic number, because the mean of its divisors is an integer number (109456686612).

Almost surely, 2^721024205045 is an apocalyptic number.

It is an amenable number.

721024205045 is a deficient number, since it is larger than the sum of its proper divisors (154629287851).

721024205045 is a wasteful number, since it uses less digits than its factorization.

721024205045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737407811.

The product of its (nonzero) digits is 22400, while the sum is 32.

The spelling of 721024205045 in words is "seven hundred twenty-one billion, twenty-four million, two hundred five thousand, forty-five".