105641984991 has 8 divisors (see below), whose sum is σ = 140875000624. Its totient is φ = 70418479680.

The previous prime is 105641984927. The next prime is 105641984993. The reversal of 105641984991 is 199489146501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105641984991 - 2⁶ = 105641984927 is a prime.

It is a super-2 number, since 2×105641984991² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105641984993) 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, 2351620 + ... + 2396121.

It is an arithmetic number, because the mean of its divisors is an integer number (17609375078).

Almost surely, 2^105641984991 is an apocalyptic number.

105641984991 is a deficient number, since it is larger than the sum of its proper divisors (35233015633).

105641984991 is an equidigital number, since it uses as much as digits as its factorization.

105641984991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755161.

The product of its (nonzero) digits is 2799360, while the sum is 57.

The spelling of 105641984991 in words is "one hundred five billion, six hundred forty-one million, nine hundred eighty-four thousand, nine hundred ninety-one".