40210043645 has 16 divisors (see below), whose sum is σ = 51105560688. Its totient is φ = 30266818560.

The previous prime is 40210043593. The next prime is 40210043651. The reversal of 40210043645 is 54634001204.

It can be written as a sum of positive squares in 8 ways, for example, as 874858084 + 39335185561 = 29578^2 + 198331^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40210043645 is a prime.

It is a Duffinian number.

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, 225425 + ... + 362265.

It is an arithmetic number, because the mean of its divisors is an integer number (3194097543).

Almost surely, 2^40210043645 is an apocalyptic number.

It is an amenable number.

40210043645 is a deficient number, since it is larger than the sum of its proper divisors (10895517043).

40210043645 is a wasteful number, since it uses less digits than its factorization.

40210043645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140320.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 40210043645 its reverse (54634001204), we get a palindrome (94844044849).

The spelling of 40210043645 in words is "forty billion, two hundred ten million, forty-three thousand, six hundred forty-five".