39941350565 has 8 divisors (see below), whose sum is σ = 47952020088. Its totient is φ = 31938147520.

The previous prime is 39941350529. The next prime is 39941350567. The reversal of 39941350565 is 56505314993.

It can be written as a sum of positive squares in 4 ways, for example, as 4784350561 + 35157000004 = 69169^2 + 187502^2 .

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

It is not a de Polignac number, because 39941350565 - 2¹⁰ = 39941349541 is a prime.

It is a super-2 number, since 2×39941350565² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39941350567) 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, 1854842 + ... + 1876251.

It is an arithmetic number, because the mean of its divisors is an integer number (5994002511).

Almost surely, 2^39941350565 is an apocalyptic number.

It is an amenable number.

39941350565 is a deficient number, since it is larger than the sum of its proper divisors (8010669523).

39941350565 is a wasteful number, since it uses less digits than its factorization.

39941350565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733239.

The product of its (nonzero) digits is 2187000, while the sum is 50.

The spelling of 39941350565 in words is "thirty-nine billion, nine hundred forty-one million, three hundred fifty thousand, five hundred sixty-five".