40728750007 has 4 divisors (see below), whose sum is σ = 44431363656. Its totient is φ = 37026136360.

The previous prime is 40728749981. The next prime is 40728750017. The reversal of 40728750007 is 70005782704.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40728750007 - 2¹¹ = 40728747959 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40728750017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851306808 + ... + 1851306829.

It is an arithmetic number, because the mean of its divisors is an integer number (11107840914).

Almost surely, 2^40728750007 is an apocalyptic number.

40728750007 is a deficient number, since it is larger than the sum of its proper divisors (3702613649).

40728750007 is a wasteful number, since it uses less digits than its factorization.

40728750007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702613648.

The product of its (nonzero) digits is 109760, while the sum is 40.

The spelling of 40728750007 in words is "forty billion, seven hundred twenty-eight million, seven hundred fifty thousand, seven".