40215744845 has 8 divisors (see below), whose sum is σ = 48310403064. Its totient is φ = 32138256384.

The previous prime is 40215744839. The next prime is 40215744853. The reversal of 40215744845 is 54844751204.

It can be written as a sum of positive squares in 4 ways, for example, as 1443772009 + 38771972836 = 37997^2 + 196906^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40215744845 - 2¹⁴ = 40215728461 is a prime.

It is a super-2 number, since 2×40215744845² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40215744796 and 40215744805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4287284 + ... + 4296653.

It is an arithmetic number, because the mean of its divisors is an integer number (6038800383).

Almost surely, 2^40215744845 is an apocalyptic number.

It is an amenable number.

40215744845 is a deficient number, since it is larger than the sum of its proper divisors (8094658219).

40215744845 is an equidigital number, since it uses as much as digits as its factorization.

40215744845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8584879.

The product of its (nonzero) digits is 716800, while the sum is 44.

The spelling of 40215744845 in words is "forty billion, two hundred fifteen million, seven hundred forty-four thousand, eight hundred forty-five".