105120801777 has 4 divisors (see below), whose sum is σ = 140161069040. Its totient is φ = 70080534516.

The previous prime is 105120801727. The next prime is 105120801857. The reversal of 105120801777 is 777108021501.

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 105120801777 - 2⁸ = 105120801521 is a prime.

It is a super-2 number, since 2×105120801777² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105120801727) 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, 17520133627 + ... + 17520133632.

It is an arithmetic number, because the mean of its divisors is an integer number (35040267260).

Almost surely, 2^105120801777 is an apocalyptic number.

It is an amenable number.

105120801777 is a deficient number, since it is larger than the sum of its proper divisors (35040267263).

105120801777 is an equidigital number, since it uses as much as digits as its factorization.

105120801777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35040267262.

The product of its (nonzero) digits is 27440, while the sum is 39.

The spelling of 105120801777 in words is "one hundred five billion, one hundred twenty million, eight hundred one thousand, seven hundred seventy-seven".