40129712807 has 2 divisors, whose sum is σ = 40129712808. Its totient is φ = 40129712806.

The previous prime is 40129712801. The next prime is 40129712837. The reversal of 40129712807 is 70821792104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40129712807 - 2⁶ = 40129712743 is a prime.

It is a super-2 number, since 2×40129712807² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40129712801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20064856403 + 20064856404.

It is an arithmetic number, because the mean of its divisors is an integer number (20064856404).

Almost surely, 2^40129712807 is an apocalyptic number.

40129712807 is a deficient number, since it is larger than the sum of its proper divisors (1).

40129712807 is an equidigital number, since it uses as much as digits as its factorization.

40129712807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 40129712807 in words is "forty billion, one hundred twenty-nine million, seven hundred twelve thousand, eight hundred seven".