40641442605 has 96 divisors (see below), whose sum is σ = 77829373440. Its totient is φ = 20286262080.

The previous prime is 40641442601. The next prime is 40641442609. The reversal of 40641442605 is 50624414604.

40641442605 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 1 + 4 + 42 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (40641442601) and next prime (40641442609).

It is not a de Polignac number, because 40641442605 - 2² = 40641442601 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40641442605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40641442601) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1905450 + ... + 1926660.

It is an arithmetic number, because the mean of its divisors is an integer number (810722640).

Almost surely, 2^40641442605 is an apocalyptic number.

40641442605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40641442605 is a deficient number, since it is larger than the sum of its proper divisors (37187930835).

40641442605 is a wasteful number, since it uses less digits than its factorization.

40641442605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21333 (or 21321 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 40641442605 in words is "forty billion, six hundred forty-one million, four hundred forty-two thousand, six hundred five".