40064200073 has 2 divisors, whose sum is σ = 40064200074. Its totient is φ = 40064200072.

The previous prime is 40064200021. The next prime is 40064200091. The reversal of 40064200073 is 37000246004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24804045049 + 15260155024 = 157493^2 + 123532^2 .

It is a cyclic number.

It is not a de Polignac number, because 40064200073 - 2⁶ = 40064200009 is a prime.

It is not a weakly prime, because it can be changed into another prime (40064200003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20032100036 + 20032100037.

It is an arithmetic number, because the mean of its divisors is an integer number (20032100037).

Almost surely, 2^40064200073 is an apocalyptic number.

It is an amenable number.

40064200073 is a deficient number, since it is larger than the sum of its proper divisors (1).

40064200073 is an equidigital number, since it uses as much as digits as its factorization.

40064200073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 40064200073 its reverse (37000246004), we get a palindrome (77064446077).

The spelling of 40064200073 in words is "forty billion, sixty-four million, two hundred thousand, seventy-three".