38721132606805 has 32 divisors (see below), whose sum is σ = 50732356866048. Its totient is φ = 28137014241600.

The previous prime is 38721132606719. The next prime is 38721132606899. The reversal of 38721132606805 is 50860623112783.

It is a happy number.

It is not a de Polignac number, because 38721132606805 - 2¹¹ = 38721132604757 is a prime.

It is a super-3 number, since 3×38721132606805³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340249944 + ... + 340363726.

It is an arithmetic number, because the mean of its divisors is an integer number (1585386152064).

Almost surely, 2^{38721132606805} is an apocalyptic number.

It is an amenable number.

38721132606805 is a deficient number, since it is larger than the sum of its proper divisors (12011224259243).

38721132606805 is a wasteful number, since it uses less digits than its factorization.

38721132606805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118977.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 38721132606805 in words is "thirty-eight trillion, seven hundred twenty-one billion, one hundred thirty-two million, six hundred six thousand, eight hundred five".