40678452593 has 2 divisors, whose sum is σ = 40678452594. Its totient is φ = 40678452592.

The previous prime is 40678452589. The next prime is 40678452611. The reversal of 40678452593 is 39525487604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40446438769 + 232013824 = 201113^2 + 15232^2 .

It is a cyclic number.

It is not a de Polignac number, because 40678452593 - 2² = 40678452589 is a prime.

It is not a weakly prime, because it can be changed into another prime (40678422593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20339226296 + 20339226297.

It is an arithmetic number, because the mean of its divisors is an integer number (20339226297).

Almost surely, 2^40678452593 is an apocalyptic number.

It is an amenable number.

40678452593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40678452593 is an equidigital number, since it uses as much as digits as its factorization.

40678452593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 40678452593 in words is "forty billion, six hundred seventy-eight million, four hundred fifty-two thousand, five hundred ninety-three".