40808473641 has 12 divisors (see below), whose sum is σ = 63479848068. Its totient is φ = 25112906784.

The previous prime is 40808473621. The next prime is 40808473679. The reversal of 40808473641 is 14637480804.

40808473641 is a `hidden beast` number, since 40 + 80 + 8 + 473 + 64 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20859736041 + 19948737600 = 144429^2 + 141240^2 .

It is not a de Polignac number, because 40808473641 - 2⁵ = 40808473609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40808473621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174395070 + ... + 174395303.

It is an arithmetic number, because the mean of its divisors is an integer number (5289987339).

Almost surely, 2^40808473641 is an apocalyptic number.

It is an amenable number.

40808473641 is a deficient number, since it is larger than the sum of its proper divisors (22671374427).

40808473641 is a wasteful number, since it uses less digits than its factorization.

40808473641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348790392 (or 348790389 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 40808473641 in words is "forty billion, eight hundred eight million, four hundred seventy-three thousand, six hundred forty-one".