4445457381145 has 16 divisors (see below), whose sum is σ = 5819552555328. Its totient is φ = 3233035074240.

The previous prime is 4445457381143. The next prime is 4445457381251. The reversal of 4445457381145 is 5411837545444.

It is not a de Polignac number, because 4445457381145 - 2¹ = 4445457381143 is a prime.

It is a super-3 number, since 3×4445457381145³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4445457381143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9994582 + ... + 10429888.

It is an arithmetic number, because the mean of its divisors is an integer number (363722034708).

Almost surely, 2^{4445457381145} is an apocalyptic number.

It is an amenable number.

4445457381145 is a deficient number, since it is larger than the sum of its proper divisors (1374095174183).

4445457381145 is a wasteful number, since it uses less digits than its factorization.

4445457381145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621000.

The product of its digits is 21504000, while the sum is 55.

The spelling of 4445457381145 in words is "four trillion, four hundred forty-five billion, four hundred fifty-seven million, three hundred eighty-one thousand, one hundred forty-five".