40423204870565 has 32 divisors (see below), whose sum is σ = 53015626452096. Its totient is φ = 29344279490560.

The previous prime is 40423204870561. The next prime is 40423204870567. The reversal of 40423204870565 is 56507840232404.

It is not a de Polignac number, because 40423204870565 - 2² = 40423204870561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423204870561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203973014 + ... + 204171096.

It is an arithmetic number, because the mean of its divisors is an integer number (1656738326628).

Almost surely, 2^{40423204870565} is an apocalyptic number.

It is an amenable number.

40423204870565 is a deficient number, since it is larger than the sum of its proper divisors (12592421581531).

40423204870565 is a wasteful number, since it uses less digits than its factorization.

40423204870565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204949.

The product of its (nonzero) digits is 6451200, while the sum is 50.

The spelling of 40423204870565 in words is "forty trillion, four hundred twenty-three billion, two hundred four million, eight hundred seventy thousand, five hundred sixty-five".