40809639255 has 256 divisors, whose sum is σ = 89125650432. Its totient is φ = 15427584000.

The previous prime is 40809639239. The next prime is 40809639271. The reversal of 40809639255 is 55293690804.

It is an interprime number because it is at equal distance from previous prime (40809639239) and next prime (40809639271).

It is not a de Polignac number, because 40809639255 - 2⁴ = 40809639239 is a prime.

It is a super-2 number, since 2×40809639255² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 40809639198 and 40809639207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 131220550 + ... + 131220860.

It is an arithmetic number, because the mean of its divisors is an integer number (348147072).

Almost surely, 2^40809639255 is an apocalyptic number.

40809639255 is an abundant number, since it is smaller than the sum of its proper divisors (48316011177).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40809639255 is a wasteful number, since it uses less digits than its factorization.

40809639255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 40809639255 in words is "forty billion, eight hundred nine million, six hundred thirty-nine thousand, two hundred fifty-five".