40445501497 has 2 divisors, whose sum is σ = 40445501498. Its totient is φ = 40445501496.

The previous prime is 40445501477. The next prime is 40445501653. The reversal of 40445501497 is 79410554404.

40445501497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40235946921 + 209554576 = 200589^2 + 14476^2 .

It is a cyclic number.

It is not a de Polignac number, because 40445501497 - 2¹¹ = 40445499449 is a prime.

It is not a weakly prime, because it can be changed into another prime (40445501477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222750748 + 20222750749.

It is an arithmetic number, because the mean of its divisors is an integer number (20222750749).

Almost surely, 2^40445501497 is an apocalyptic number.

It is an amenable number.

40445501497 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445501497 is an equidigital number, since it uses as much as digits as its factorization.

40445501497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 40445501497 in words is "forty billion, four hundred forty-five million, five hundred one thousand, four hundred ninety-seven".