40005455522 has 18 divisors (see below), whose sum is σ = 60366284433. Its totient is φ = 19884067152.

The previous prime is 40005455521. The next prime is 40005455527. The reversal of 40005455522 is 22555450004.

It can be written as a sum of positive squares in 2 ways, for example, as 36096580081 + 3908875441 = 189991^2 + 62521^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=141431.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40005455521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 65906543 + ... + 65907149.

Almost surely, 2^40005455522 is an apocalyptic number.

40005455522 is a deficient number, since it is larger than the sum of its proper divisors (20360828911).

40005455522 is an frugal number, since it uses more digits than its factorization.

40005455522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

Multiplying 40005455522 by its sum of digits (32), we get a square (1280174576704 = 1131448²).

The spelling of 40005455522 in words is "forty billion, five million, four hundred fifty-five thousand, five hundred twenty-two".