40061115565 has 16 divisors (see below), whose sum is σ = 49651370928. Its totient is φ = 31013438976.

The previous prime is 40061115547. The next prime is 40061115607. The reversal of 40061115565 is 56551116004.

40061115565 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 8 ways, for example, as 3590046889 + 36471068676 = 59917^2 + 190974^2 .

It is a cyclic number.

It is not a de Polignac number, because 40061115565 - 2²⁹ = 39524244653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40061115565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016094 + ... + 1054783.

It is an arithmetic number, because the mean of its divisors is an integer number (3103210683).

Almost surely, 2^40061115565 is an apocalyptic number.

It is an amenable number.

40061115565 is a deficient number, since it is larger than the sum of its proper divisors (9590255363).

40061115565 is a wasteful number, since it uses less digits than its factorization.

40061115565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071008.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 40061115565 in words is "forty billion, sixty-one million, one hundred fifteen thousand, five hundred sixty-five".