721061001113 has 8 divisors (see below), whose sum is σ = 738183151200. Its totient is φ = 703954909728.

The previous prime is 721061001047. The next prime is 721061001139. The reversal of 721061001113 is 311100160127.

It is a happy number.

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 721061001113 - 2³² = 716766033817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (721061001173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3923783 + ... + 4103436.

It is an arithmetic number, because the mean of its divisors is an integer number (92272893900).

Almost surely, 2^721061001113 is an apocalyptic number.

It is an amenable number.

721061001113 is a deficient number, since it is larger than the sum of its proper divisors (17122150087).

721061001113 is a wasteful number, since it uses less digits than its factorization.

721061001113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029351.

The product of its (nonzero) digits is 252, while the sum is 23.

The spelling of 721061001113 in words is "seven hundred twenty-one billion, sixty-one million, one thousand, one hundred thirteen".