40704128029 has 4 divisors (see below), whose sum is σ = 40710100576. Its totient is φ = 40698155484.

The previous prime is 40704127991. The next prime is 40704128039. The reversal of 40704128029 is 92082140704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40704128029 - 2²³ = 40695739421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40704128039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2976039 + ... + 2989684.

It is an arithmetic number, because the mean of its divisors is an integer number (10177525144).

Almost surely, 2^40704128029 is an apocalyptic number.

It is an amenable number.

40704128029 is a deficient number, since it is larger than the sum of its proper divisors (5972547).

40704128029 is an equidigital number, since it uses as much as digits as its factorization.

40704128029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972546.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 40704128029 in words is "forty billion, seven hundred four million, one hundred twenty-eight thousand, twenty-nine".