40572932809 has 2 divisors, whose sum is σ = 40572932810. Its totient is φ = 40572932808.

The previous prime is 40572932797. The next prime is 40572932833. The reversal of 40572932809 is 90823927504.

40572932809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36979290000 + 3593642809 = 192300^2 + 59947^2 .

It is a cyclic number.

It is not a de Polignac number, because 40572932809 - 2¹³ = 40572924617 is a prime.

It is not a weakly prime, because it can be changed into another prime (40572932909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20286466404 + 20286466405.

It is an arithmetic number, because the mean of its divisors is an integer number (20286466405).

Almost surely, 2^40572932809 is an apocalyptic number.

It is an amenable number.

40572932809 is a deficient number, since it is larger than the sum of its proper divisors (1).

40572932809 is an equidigital number, since it uses as much as digits as its factorization.

40572932809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 40572932809 in words is "forty billion, five hundred seventy-two million, nine hundred thirty-two thousand, eight hundred nine".