4400521452545 has 8 divisors (see below), whose sum is σ = 5280673657896. Its totient is φ = 3520385218816.

The previous prime is 4400521452469. The next prime is 4400521452599. The reversal of 4400521452545 is 5452541250044.

It can be written as a sum of positive squares in 4 ways, for example, as 239231526769 + 4161289925776 = 489113^2 + 2039924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4400521452545 is a prime.

It is a super-3 number, since 3×4400521452545³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3378152 + ... + 4495881.

It is an arithmetic number, because the mean of its divisors is an integer number (660084207237).

Almost surely, 2^{4400521452545} is an apocalyptic number.

It is an amenable number.

4400521452545 is a deficient number, since it is larger than the sum of its proper divisors (880152205351).

4400521452545 is a wasteful number, since it uses less digits than its factorization.

4400521452545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7985811.

The product of its (nonzero) digits is 640000, while the sum is 41.

The spelling of 4400521452545 in words is "four trillion, four hundred billion, five hundred twenty-one million, four hundred fifty-two thousand, five hundred forty-five".