40388930785 has 32 divisors (see below), whose sum is σ = 57200707584. Its totient is φ = 26790912000.

The previous prime is 40388930783. The next prime is 40388930789. The reversal of 40388930785 is 58703988304.

It is not a de Polignac number, because 40388930785 - 2¹ = 40388930783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40388930783) 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 31 ways as a sum of consecutive naturals, for example, 3315105 + ... + 3327265.

It is an arithmetic number, because the mean of its divisors is an integer number (1787522112).

Almost surely, 2^40388930785 is an apocalyptic number.

It is an amenable number.

40388930785 is a deficient number, since it is larger than the sum of its proper divisors (16811776799).

40388930785 is a wasteful number, since it uses less digits than its factorization.

40388930785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15265.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 40388930785 in words is "forty billion, three hundred eighty-eight million, nine hundred thirty thousand, seven hundred eighty-five".