40505423235 has 32 divisors (see below), whose sum is σ = 69392013120. Its totient is φ = 20103671808.

The previous prime is 40505423219. The next prime is 40505423237. The reversal of 40505423235 is 53232450504.

It is a happy number.

It is not a de Polignac number, because 40505423235 - 2⁴ = 40505423219 is a prime.

It is a super-2 number, since 2×40505423235² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40505423196 and 40505423205.

It is not an unprimeable number, because it can be changed into a prime (40505423237) 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, 869692 + ... + 915081.

It is an arithmetic number, because the mean of its divisors is an integer number (2168500410).

Almost surely, 2^40505423235 is an apocalyptic number.

40505423235 is a deficient number, since it is larger than the sum of its proper divisors (28886589885).

40505423235 is a wasteful number, since it uses less digits than its factorization.

40505423235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784887.

The product of its (nonzero) digits is 72000, while the sum is 33.

Adding to 40505423235 its reverse (53232450504), we get a palindrome (93737873739).

The spelling of 40505423235 in words is "forty billion, five hundred five million, four hundred twenty-three thousand, two hundred thirty-five".