40000077777 has 16 divisors (see below), whose sum is σ = 58483401408. Its totient is φ = 24116858880.

The previous prime is 40000077743. The next prime is 40000077779. The reversal of 40000077777 is 77777000004.

It is not a de Polignac number, because 40000077777 - 2⁶ = 40000077713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40000077779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3133848 + ... + 3146585.

It is an arithmetic number, because the mean of its divisors is an integer number (3655212588).

Almost surely, 2^40000077777 is an apocalyptic number.

It is an amenable number.

40000077777 is a deficient number, since it is larger than the sum of its proper divisors (18483323631).

40000077777 is a wasteful number, since it uses less digits than its factorization.

40000077777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280640.

The product of its (nonzero) digits is 67228, while the sum is 39.

The spelling of 40000077777 in words is "forty billion, seventy-seven thousand, seven hundred seventy-seven".