40578609573 has 6 divisors (see below), whose sum is σ = 58613547174. Its totient is φ = 27052406376.

The previous prime is 40578609569. The next prime is 40578609581. The reversal of 40578609573 is 37590687504.

40578609573 is a `hidden beast` number, since 4 + 0 + 5 + 7 + 8 + 60 + 9 + 573 = 666.

40578609573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 28907480484 + 11671129089 = 170022^2 + 108033^2 .

It is not a de Polignac number, because 40578609573 - 2² = 40578609569 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40578609593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2254367190 + ... + 2254367207.

It is an arithmetic number, because the mean of its divisors is an integer number (9768924529).

Almost surely, 2^40578609573 is an apocalyptic number.

It is an amenable number.

40578609573 is a deficient number, since it is larger than the sum of its proper divisors (18034937601).

40578609573 is a wasteful number, since it uses less digits than its factorization.

40578609573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508734403 (or 4508734400 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 40578609573 in words is "forty billion, five hundred seventy-eight million, six hundred nine thousand, five hundred seventy-three".