40777837065 has 24 divisors (see below), whose sum is σ = 80778954048. Its totient is φ = 18641296800.

The previous prime is 40777837063. The next prime is 40777837231. The reversal of 40777837065 is 56073877704.

It is not a de Polignac number, because 40777837065 - 2¹ = 40777837063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40777837063) 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 23 ways as a sum of consecutive naturals, for example, 64726411 + ... + 64727040.

It is an arithmetic number, because the mean of its divisors is an integer number (3365789752).

Almost surely, 2^40777837065 is an apocalyptic number.

40777837065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40777837065 is a deficient number, since it is larger than the sum of its proper divisors (40001116983).

40777837065 is a wasteful number, since it uses less digits than its factorization.

40777837065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129453469 (or 129453466 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 54.

The spelling of 40777837065 in words is "forty billion, seven hundred seventy-seven million, eight hundred thirty-seven thousand, sixty-five".