40445200465 has 16 divisors (see below), whose sum is σ = 50668477200. Its totient is φ = 30953809152.

The previous prime is 40445200457. The next prime is 40445200469. The reversal of 40445200465 is 56400254404.

It can be written as a sum of positive squares in 8 ways, for example, as 2317170769 + 38128029696 = 48137^2 + 195264^2 .

It is a cyclic number.

It is not a de Polignac number, because 40445200465 - 2³ = 40445200457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40445200465.

It is not an unprimeable number, because it can be changed into a prime (40445200469) 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, 1263702 + ... + 1295311.

It is an arithmetic number, because the mean of its divisors is an integer number (3166779825).

Almost surely, 2^40445200465 is an apocalyptic number.

It is an amenable number.

40445200465 is a deficient number, since it is larger than the sum of its proper divisors (10223276735).

40445200465 is a wasteful number, since it uses less digits than its factorization.

40445200465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559156.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 40445200465 its reverse (56400254404), we get a palindrome (96845454869).

The spelling of 40445200465 in words is "forty billion, four hundred forty-five million, two hundred thousand, four hundred sixty-five".