40077599865 has 16 divisors (see below), whose sum is σ = 64126945728. Its totient is φ = 21373791296.

The previous prime is 40077599839. The next prime is 40077599869. The reversal of 40077599865 is 56899577004.

It is a cyclic number.

It is not a de Polignac number, because 40077599865 - 2²⁰ = 40076551289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40077599799 and 40077599808.

It is not an unprimeable number, because it can be changed into a prime (40077599869) 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 15 ways as a sum of consecutive naturals, for example, 432427 + ... + 516863.

It is an arithmetic number, because the mean of its divisors is an integer number (4007934108).

Almost surely, 2^40077599865 is an apocalyptic number.

It is an amenable number.

40077599865 is a deficient number, since it is larger than the sum of its proper divisors (24049345863).

40077599865 is a wasteful number, since it uses less digits than its factorization.

40077599865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116088.

The product of its (nonzero) digits is 19051200, while the sum is 60.

The spelling of 40077599865 in words is "forty billion, seventy-seven million, five hundred ninety-nine thousand, eight hundred sixty-five".