41207520645 has 24 divisors (see below), whose sum is σ = 71738292600. Its totient is φ = 21881367936.

The previous prime is 41207520631. The next prime is 41207520689. The reversal of 41207520645 is 54602570214.

It is a happy number.

41207520645 is a `hidden beast` number, since 4 + 1 + 2 + 0 + 7 + 5 + 2 + 0 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23392478916 + 17815041729 = 152946^2 + 133473^2 .

It is not a de Polignac number, because 41207520645 - 2⁶ = 41207520581 is a prime.

It is a congruent number.

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, 1989090 + ... + 2009699.

It is an arithmetic number, because the mean of its divisors is an integer number (2989095525).

Almost surely, 2^41207520645 is an apocalyptic number.

41207520645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41207520645 is a deficient number, since it is larger than the sum of its proper divisors (30530771955).

41207520645 is a wasteful number, since it uses less digits than its factorization.

41207520645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999029 (or 3999026 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 41207520645 in words is "forty-one billion, two hundred seven million, five hundred twenty thousand, six hundred forty-five".