3450544017721 has 4 divisors (see below), whose sum is σ = 3653517195252. Its totient is φ = 3247570840192.

The previous prime is 3450544017719. The next prime is 3450544017737. The reversal of 3450544017721 is 1277104450543.

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 2096672144121 + 1353871873600 = 1447989^2 + 1163560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3450544017721 - 2¹ = 3450544017719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3450544017821) 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, 101486588740 + ... + 101486588773.

It is an arithmetic number, because the mean of its divisors is an integer number (913379298813).

Almost surely, 2^{3450544017721} is an apocalyptic number.

It is an amenable number.

3450544017721 is a deficient number, since it is larger than the sum of its proper divisors (202973177531).

3450544017721 is a wasteful number, since it uses less digits than its factorization.

3450544017721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202973177530.

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 3450544017721 in words is "three trillion, four hundred fifty billion, five hundred forty-four million, seventeen thousand, seven hundred twenty-one".