105739940649 has 8 divisors (see below), whose sum is σ = 161127528640. Its totient is φ = 60422823216.

The previous prime is 105739940639. The next prime is 105739940671. The reversal of 105739940649 is 946049937501.

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

It is not a de Polignac number, because 105739940649 - 2¹⁶ = 105739875113 is a prime.

It is a super-2 number, since 2×105739940649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105739940609) 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, 2517617614 + ... + 2517617655.

It is an arithmetic number, because the mean of its divisors is an integer number (20140941080).

Almost surely, 2^105739940649 is an apocalyptic number.

It is an amenable number.

105739940649 is a deficient number, since it is larger than the sum of its proper divisors (55387587991).

105739940649 is an equidigital number, since it uses as much as digits as its factorization.

105739940649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035235279.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 105739940649 in words is "one hundred five billion, seven hundred thirty-nine million, nine hundred forty thousand, six hundred forty-nine".