40678452677 has 2 divisors, whose sum is σ = 40678452678. Its totient is φ = 40678452676.

The previous prime is 40678452673. The next prime is 40678452769. The reversal of 40678452677 is 77625487604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23936421796 + 16742030881 = 154714^2 + 129391^2 .

It is a cyclic number.

It is not a de Polignac number, because 40678452677 - 2² = 40678452673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40678452673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20339226338 + 20339226339.

It is an arithmetic number, because the mean of its divisors is an integer number (20339226339).

Almost surely, 2^40678452677 is an apocalyptic number.

It is an amenable number.

40678452677 is a deficient number, since it is larger than the sum of its proper divisors (1).

40678452677 is an equidigital number, since it uses as much as digits as its factorization.

40678452677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 40678452677 in words is "forty billion, six hundred seventy-eight million, four hundred fifty-two thousand, six hundred seventy-seven".