42177409705 has 4 divisors (see below), whose sum is σ = 50612891652. Its totient is φ = 33741927760.

The previous prime is 42177409621. The next prime is 42177409723. The reversal of 42177409705 is 50790477124.

42177409705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6248586304 + 35928823401 = 79048^2 + 189549^2 .

It is not a de Polignac number, because 42177409705 - 2¹⁵ = 42177376937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217740966 + ... + 4217740975.

It is an arithmetic number, because the mean of its divisors is an integer number (12653222913).

Almost surely, 2^42177409705 is an apocalyptic number.

It is an amenable number.

42177409705 is a deficient number, since it is larger than the sum of its proper divisors (8435481947).

42177409705 is an equidigital number, since it uses as much as digits as its factorization.

42177409705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8435481946.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 42177409705 in words is "forty-two billion, one hundred seventy-seven million, four hundred nine thousand, seven hundred five".