106718136817881 has 4 divisors (see below), whose sum is σ = 142290849090512. Its totient is φ = 71145424545252.

The previous prime is 106718136817879. The next prime is 106718136817907. The reversal of 106718136817881 is 188718631817601.

It is a happy number.

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 106718136817881 - 2¹ = 106718136817879 is a prime.

It is a super-2 number, since 2×106718136817881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106718136817781) 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, 17786356136311 + ... + 17786356136316.

It is an arithmetic number, because the mean of its divisors is an integer number (35572712272628).

Almost surely, 2^{106718136817881} is an apocalyptic number.

It is an amenable number.

106718136817881 is a deficient number, since it is larger than the sum of its proper divisors (35572712272631).

106718136817881 is an equidigital number, since it uses as much as digits as its factorization.

106718136817881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35572712272630.

The product of its (nonzero) digits is 21676032, while the sum is 66.

The spelling of 106718136817881 in words is "one hundred six trillion, seven hundred eighteen billion, one hundred thirty-six million, eight hundred seventeen thousand, eight hundred eighty-one".