40504016801665 has 8 divisors (see below), whose sum is σ = 48605043620520. Its totient is φ = 32403064468992.

The previous prime is 40504016801653. The next prime is 40504016801683. The reversal of 40504016801665 is 56610861040504.

It can be written as a sum of positive squares in 4 ways, for example, as 307998360576 + 40196018441089 = 554976^2 + 6340033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40504016801665 - 2³¹ = 40501869318017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17418160 + ... + 19606129.

It is an arithmetic number, because the mean of its divisors is an integer number (6075630452565).

Almost surely, 2^{40504016801665} is an apocalyptic number.

It is an amenable number.

40504016801665 is a deficient number, since it is larger than the sum of its proper divisors (8101026818855).

40504016801665 is a wasteful number, since it uses less digits than its factorization.

40504016801665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37243091.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 40504016801665 in words is "forty trillion, five hundred four billion, sixteen million, eight hundred one thousand, six hundred sixty-five".