40423023577 has 4 divisors (see below), whose sum is σ = 40976763700. Its totient is φ = 39869283456.

The previous prime is 40423023559. The next prime is 40423023581. The reversal of 40423023577 is 77532032404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25922288016 + 14500735561 = 161004^2 + 120419^2 .

It is a cyclic number.

It is not a de Polignac number, because 40423023577 - 2⁷ = 40423023449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40423023077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276869952 + ... + 276870097.

It is an arithmetic number, because the mean of its divisors is an integer number (10244190925).

Almost surely, 2^40423023577 is an apocalyptic number.

It is an amenable number.

40423023577 is a deficient number, since it is larger than the sum of its proper divisors (553740123).

40423023577 is an equidigital number, since it uses as much as digits as its factorization.

40423023577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553740122.

The product of its (nonzero) digits is 141120, while the sum is 37.

The spelling of 40423023577 in words is "forty billion, four hundred twenty-three million, twenty-three thousand, five hundred seventy-seven".