40647460129 has 2 divisors, whose sum is σ = 40647460130. Its totient is φ = 40647460128.

The previous prime is 40647460039. The next prime is 40647460163. The reversal of 40647460129 is 92106474604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39016915729 + 1630544400 = 197527^2 + 40380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40647460129 is a prime.

It is not a weakly prime, because it can be changed into another prime (40647460729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20323730064 + 20323730065.

It is an arithmetic number, because the mean of its divisors is an integer number (20323730065).

Almost surely, 2^40647460129 is an apocalyptic number.

It is an amenable number.

40647460129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40647460129 is an equidigital number, since it uses as much as digits as its factorization.

40647460129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 40647460129 in words is "forty billion, six hundred forty-seven million, four hundred sixty thousand, one hundred twenty-nine".