3405358517257 has 4 divisors (see below), whose sum is σ = 3423002862100. Its totient is φ = 3387714172416.

The previous prime is 3405358517233. The next prime is 3405358517269. The reversal of 3405358517257 is 7527158535043.

It is a happy number.

3405358517257 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 858209548816 + 2547148968441 = 926396^2 + 1595979^2 .

It is a cyclic number.

It is not a de Polignac number, because 3405358517257 - 2³¹ = 3403211033609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3405358517198 and 3405358517207.

It is not an unprimeable number, because it can be changed into a prime (3405358517227) 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, 8822172132 + ... + 8822172517.

It is an arithmetic number, because the mean of its divisors is an integer number (855750715525).

Almost surely, 2^{3405358517257} is an apocalyptic number.

It is an amenable number.

3405358517257 is a deficient number, since it is larger than the sum of its proper divisors (17644344843).

3405358517257 is a wasteful number, since it uses less digits than its factorization.

3405358517257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17644344842.

The product of its (nonzero) digits is 17640000, while the sum is 55.

The spelling of 3405358517257 in words is "three trillion, four hundred five billion, three hundred fifty-eight million, five hundred seventeen thousand, two hundred fifty-seven".