40659546013 has 8 divisors (see below), whose sum is σ = 41808856280. Its totient is φ = 39512888640.

The previous prime is 40659546007. The next prime is 40659546023. The reversal of 40659546013 is 31064595604.

It can be written as a sum of positive squares in 4 ways, for example, as 15422410969 + 25237135044 = 124187^2 + 158862^2 .

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 40659546013 - 2²¹ = 40657448861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40659546023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632118 + ... + 693463.

It is an arithmetic number, because the mean of its divisors is an integer number (5226107035).

Almost surely, 2^40659546013 is an apocalyptic number.

It is an amenable number.

40659546013 is a deficient number, since it is larger than the sum of its proper divisors (1149310267).

40659546013 is a wasteful number, since it uses less digits than its factorization.

40659546013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326447.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 40659546013 in words is "forty billion, six hundred fifty-nine million, five hundred forty-six thousand, thirteen".