10617721919 has 8 divisors (see below), whose sum is σ = 12392721408. Its totient is φ = 8907267960.

The previous prime is 10617721903. The next prime is 10617721957. The reversal of 10617721919 is 91912771601.

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 10617721919 - 2⁴ = 10617721903 is a prime.

It is a super-2 number, since 2×10617721919² (a number of 21 digits) contains 22 as substring.

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 10617721919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10617721819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16136027 + ... + 16136684.

It is an arithmetic number, because the mean of its divisors is an integer number (1549090176).

Almost surely, 2^10617721919 is an apocalyptic number.

10617721919 is a deficient number, since it is larger than the sum of its proper divisors (1774999489).

10617721919 is an equidigital number, since it uses as much as digits as its factorization.

10617721919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32272765.

The product of its (nonzero) digits is 47628, while the sum is 44.

The spelling of 10617721919 in words is "ten billion, six hundred seventeen million, seven hundred twenty-one thousand, nine hundred nineteen".