10617918681 has 4 divisors (see below), whose sum is σ = 14157224912. Its totient is φ = 7078612452.

The previous prime is 10617918679. The next prime is 10617918691. The reversal of 10617918681 is 18681971601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10617918681 - 2¹ = 10617918679 is a prime.

It is a super-2 number, since 2×10617918681² (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 10617918681.

It is not an unprimeable number, because it can be changed into a prime (10617918691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769653111 + ... + 1769653116.

It is an arithmetic number, because the mean of its divisors is an integer number (3539306228).

Almost surely, 2^10617918681 is an apocalyptic number.

It is an amenable number.

10617918681 is a deficient number, since it is larger than the sum of its proper divisors (3539306231).

10617918681 is an equidigital number, since it uses as much as digits as its factorization.

10617918681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539306230.

The product of its (nonzero) digits is 145152, while the sum is 48.

The spelling of 10617918681 in words is "ten billion, six hundred seventeen million, nine hundred eighteen thousand, six hundred eighty-one".