40205135255 has 16 divisors (see below), whose sum is σ = 49615269984. Its totient is φ = 31257477120.

The previous prime is 40205135233. The next prime is 40205135273. The reversal of 40205135255 is 55253150204.

It is not a de Polignac number, because 40205135255 - 2¹⁴ = 40205118871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328877 + ... + 434246.

It is an arithmetic number, because the mean of its divisors is an integer number (3100954374).

Almost surely, 2^40205135255 is an apocalyptic number.

40205135255 is a deficient number, since it is larger than the sum of its proper divisors (9410134729).

40205135255 is a wasteful number, since it uses less digits than its factorization.

40205135255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763426.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 40205135255 its reverse (55253150204), we get a palindrome (95458285459).

The spelling of 40205135255 in words is "forty billion, two hundred five million, one hundred thirty-five thousand, two hundred fifty-five".