40016732665 has 16 divisors (see below), whose sum is σ = 59101636608. Its totient is φ = 25329272256.

The previous prime is 40016732659. The next prime is 40016732677. The reversal of 40016732665 is 56623761004.

It is a cyclic number.

It is not a de Polignac number, because 40016732665 - 2⁷ = 40016732537 is a prime.

It is an unprimeable number.

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, 43973977 + ... + 43974886.

It is an arithmetic number, because the mean of its divisors is an integer number (3693852288).

Almost surely, 2^40016732665 is an apocalyptic number.

It is an amenable number.

40016732665 is a deficient number, since it is larger than the sum of its proper divisors (19084903943).

40016732665 is a wasteful number, since it uses less digits than its factorization.

40016732665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87948888.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 40016732665 in words is "forty billion, sixteen million, seven hundred thirty-two thousand, six hundred sixty-five".