40401643255 has 16 divisors (see below), whose sum is σ = 50621713344. Its totient is φ = 30896588800.

The previous prime is 40401643237. The next prime is 40401643273. The reversal of 40401643255 is 55234610404.

It is an interprime number because it is at equal distance from previous prime (40401643237) and next prime (40401643273).

It is not a de Polignac number, because 40401643255 - 2⁵ = 40401643223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40401643255.

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, 74397 + ... + 293833.

It is an arithmetic number, because the mean of its divisors is an integer number (3163857084).

Almost surely, 2^40401643255 is an apocalyptic number.

40401643255 is a deficient number, since it is larger than the sum of its proper divisors (10220070089).

40401643255 is a wasteful number, since it uses less digits than its factorization.

40401643255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221066.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 40401643255 in words is "forty billion, four hundred one million, six hundred forty-three thousand, two hundred fifty-five".