4405121345545 has 16 divisors (see below), whose sum is σ = 5318520860160. Its totient is φ = 3502527523264.

The previous prime is 4405121345519. The next prime is 4405121345551. The reversal of 4405121345545 is 5455431215044.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4405121345545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661916 + ... + 3401794.

It is an arithmetic number, because the mean of its divisors is an integer number (332407553760).

Almost surely, 2^{4405121345545} is an apocalyptic number.

It is an amenable number.

4405121345545 is a deficient number, since it is larger than the sum of its proper divisors (913399514615).

4405121345545 is a wasteful number, since it uses less digits than its factorization.

4405121345545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742984.

The product of its (nonzero) digits is 960000, while the sum is 43.

The spelling of 4405121345545 in words is "four trillion, four hundred five billion, one hundred twenty-one million, three hundred forty-five thousand, five hundred forty-five".