40500739691865 has 32 divisors (see below), whose sum is σ = 72047978576640. Its totient is φ = 21586395431808.

The previous prime is 40500739691851. The next prime is 40500739691873. The reversal of 40500739691865 is 56819693700504.

40500739691865 is a `hidden beast` number, since 4 + 0 + 500 + 7 + 3 + 9 + 69 + 1 + 8 + 65 = 666.

40500739691865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40500739691865 - 2²³ = 40500731303257 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97006692 + ... + 97423301.

It is an arithmetic number, because the mean of its divisors is an integer number (2251499330520).

Almost surely, 2^{40500739691865} is an apocalyptic number.

40500739691865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40500739691865 is a deficient number, since it is larger than the sum of its proper divisors (31547238884775).

40500739691865 is a wasteful number, since it uses less digits than its factorization.

40500739691865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194431550 (or 194431544 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 40500739691865 in words is "forty trillion, five hundred billion, seven hundred thirty-nine million, six hundred ninety-one thousand, eight hundred sixty-five".