40661262542063 has 8 divisors (see below), whose sum is σ = 40783218071568. Its totient is φ = 40539436274304.

The previous prime is 40661262542053. The next prime is 40661262542111. The reversal of 40661262542063 is 36024526216604.

40661262542063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40661262542063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40661262541999 and 40661262542017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661262542023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31685345 + ... + 32943642.

It is an arithmetic number, because the mean of its divisors is an integer number (5097902258946).

Almost surely, 2^{40661262542063} is an apocalyptic number.

40661262542063 is a deficient number, since it is larger than the sum of its proper divisors (121955529505).

40661262542063 is a wasteful number, since it uses less digits than its factorization.

40661262542063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64630873.

The product of its (nonzero) digits is 2488320, while the sum is 47.

Adding to 40661262542063 its reverse (36024526216604), we get a palindrome (76685788758667).

The spelling of 40661262542063 in words is "forty trillion, six hundred sixty-one billion, two hundred sixty-two million, five hundred forty-two thousand, sixty-three".