41254543665 has 24 divisors (see below), whose sum is σ = 71513343720. Its totient is φ = 22000740864.

The previous prime is 41254543657. The next prime is 41254543697. The reversal of 41254543665 is 56634545214.

41254543665 is a `hidden beast` number, since 4 + 1 + 2 + 545 + 43 + 6 + 65 = 666.

41254543665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 573267249 + 40681276416 = 23943^2 + 201696^2 .

It is not a de Polignac number, because 41254543665 - 2³ = 41254543657 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 41254543665.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 756331 + ... + 809039.

It is an arithmetic number, because the mean of its divisors is an integer number (2979722655).

Almost surely, 2^41254543665 is an apocalyptic number.

41254543665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41254543665 is a deficient number, since it is larger than the sum of its proper divisors (30258800055).

41254543665 is a wasteful number, since it uses less digits than its factorization.

41254543665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70113 (or 70110 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The spelling of 41254543665 in words is "forty-one billion, two hundred fifty-four million, five hundred forty-three thousand, six hundred sixty-five".