40555655505 has 20 divisors (see below), whose sum is σ = 72699768372. Its totient is φ = 21629682720.

The previous prime is 40555655501. The next prime is 40555655513. The reversal of 40555655505 is 50555655504.

40555655505 is a `hidden beast` number, since 40 + 5 + 5 + 56 + 5 + 550 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27515842641 + 13039812864 = 165879^2 + 114192^2 .

It is not a de Polignac number, because 40555655505 - 2² = 40555655501 is a prime.

It is a super-2 number, since 2×40555655505² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (40555655501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50068306 + ... + 50069115.

Almost surely, 2^40555655505 is an apocalyptic number.

40555655505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40555655505 is a deficient number, since it is larger than the sum of its proper divisors (32144112867).

40555655505 is a wasteful number, since it uses less digits than its factorization.

40555655505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100137438 (or 100137429 counting only the distinct ones).

The product of its (nonzero) digits is 1875000, while the sum is 45.

Subtracting 40555655505 from its reverse (50555655504), we obtain a palindrome (9999999999).

The spelling of 40555655505 in words is "forty billion, five hundred fifty-five million, six hundred fifty-five thousand, five hundred five".