40527626664389 has 2 divisors, whose sum is σ = 40527626664390. Its totient is φ = 40527626664388.

The previous prime is 40527626664383. The next prime is 40527626664451. The reversal of 40527626664389 is 98346662672504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36654669576100 + 3872957088289 = 6054310^2 + 1967983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40527626664389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40527626664383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20263813332194 + 20263813332195.

It is an arithmetic number, because the mean of its divisors is an integer number (20263813332195).

Almost surely, 2^{40527626664389} is an apocalyptic number.

It is an amenable number.

40527626664389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40527626664389 is an equidigital number, since it uses as much as digits as its factorization.

40527626664389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 627056640, while the sum is 68.

The spelling of 40527626664389 in words is "forty trillion, five hundred twenty-seven billion, six hundred twenty-six million, six hundred sixty-four thousand, three hundred eighty-nine".