10091720455 has 8 divisors (see below), whose sum is σ = 12822421392. Its totient is φ = 7598471808.

The previous prime is 10091720417. The next prime is 10091720459. The reversal of 10091720455 is 55402719001.

10091720455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10091720455 - 2¹⁵ = 10091687687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10091720455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10091720459) 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 in 7 ways as a sum of consecutive naturals, for example, 59362977 + ... + 59363146.

It is an arithmetic number, because the mean of its divisors is an integer number (1602802674).

Almost surely, 2^10091720455 is an apocalyptic number.

10091720455 is a deficient number, since it is larger than the sum of its proper divisors (2730700937).

10091720455 is a wasteful number, since it uses less digits than its factorization.

10091720455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118726145.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 10091720455 in words is "ten billion, ninety-one million, seven hundred twenty thousand, four hundred fifty-five".