4145445641 has 16 divisors (see below), whose sum is σ = 4435665024. Its totient is φ = 3865618944.

The previous prime is 4145445617. The next prime is 4145445673. The reversal of 4145445641 is 1465445414.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4145445641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4145445595 and 4145445604.

It is not an unprimeable number, because it can be changed into a prime (4145448641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135611 + ... + 163343.

It is an arithmetic number, because the mean of its divisors is an integer number (277229064).

Almost surely, 2^4145445641 is an apocalyptic number.

It is an amenable number.

4145445641 is a deficient number, since it is larger than the sum of its proper divisors (290219383).

4145445641 is a wasteful number, since it uses less digits than its factorization.

4145445641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27920.

The product of its digits is 153600, while the sum is 38.

The square root of 4145445641 is about 64385.1352487513. The cubic root of 4145445641 is about 1606.4125000732.

The spelling of 4145445641 in words is "four billion, one hundred forty-five million, four hundred forty-five thousand, six hundred forty-one".