40002066445 has 16 divisors (see below), whose sum is σ = 53584166592. Its totient is φ = 28415842560.

The previous prime is 40002066421. The next prime is 40002066451. The reversal of 40002066445 is 54466020004.

It is not a de Polignac number, because 40002066445 - 2⁷ = 40002066317 is a prime.

It is a congruent number.

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, 8454732 + ... + 8459461.

It is an arithmetic number, because the mean of its divisors is an integer number (3349010412).

Almost surely, 2^40002066445 is an apocalyptic number.

It is an amenable number.

40002066445 is a deficient number, since it is larger than the sum of its proper divisors (13582100147).

40002066445 is a wasteful number, since it uses less digits than its factorization.

40002066445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914252.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 40002066445 its reverse (54466020004), we get a palindrome (94468086449).

The spelling of 40002066445 in words is "forty billion, two million, sixty-six thousand, four hundred forty-five".