40205042450 has 24 divisors (see below), whose sum is σ = 75621627540. Its totient is φ = 15901318400.

The previous prime is 40205042447. The next prime is 40205042543. The reversal of 40205042450 is 5424050204.

It can be written as a sum of positive squares in 6 ways, for example, as 12787312561 + 27417729889 = 113081^2 + 165583^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4512971 + ... + 4521870.

Almost surely, 2^40205042450 is an apocalyptic number.

40205042450 is a deficient number, since it is larger than the sum of its proper divisors (35416585090).

40205042450 is a wasteful number, since it uses less digits than its factorization.

40205042450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9034942 (or 9034937 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

Adding to 40205042450 its reverse (5424050204), we get a palindrome (45629092654).

The spelling of 40205042450 in words is "forty billion, two hundred five million, forty-two thousand, four hundred fifty".