40678868941 has 2 divisors, whose sum is σ = 40678868942. Its totient is φ = 40678868940.

The previous prime is 40678868921. The next prime is 40678868959. The reversal of 40678868941 is 14986887604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25234593316 + 15444275625 = 158854^2 + 124275^2 .

It is a cyclic number.

It is not a de Polignac number, because 40678868941 - 2²⁵ = 40645314509 is a prime.

It is a super-2 number, since 2×40678868941² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40678868941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40678868921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20339434470 + 20339434471.

It is an arithmetic number, because the mean of its divisors is an integer number (20339434471).

Almost surely, 2^40678868941 is an apocalyptic number.

It is an amenable number.

40678868941 is a deficient number, since it is larger than the sum of its proper divisors (1).

40678868941 is an equidigital number, since it uses as much as digits as its factorization.

40678868941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 40678868941 in words is "forty billion, six hundred seventy-eight million, eight hundred sixty-eight thousand, nine hundred forty-one".