40687869909 has 8 divisors (see below), whose sum is σ = 54446344480. Its totient is φ = 27027320976.

The previous prime is 40687869881. The next prime is 40687869917. The reversal of 40687869909 is 90996878604.

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

It is not a de Polignac number, because 40687869909 - 2²⁰ = 40686821333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40687869909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40680869909) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24480439 + ... + 24482100.

It is an arithmetic number, because the mean of its divisors is an integer number (6805793060).

Almost surely, 2^40687869909 is an apocalyptic number.

It is an amenable number.

40687869909 is a deficient number, since it is larger than the sum of its proper divisors (13758474571).

40687869909 is a wasteful number, since it uses less digits than its factorization.

40687869909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48962819.

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 40687869909 in words is "forty billion, six hundred eighty-seven million, eight hundred sixty-nine thousand, nine hundred nine".