15820682266138 has 8 divisors (see below), whose sum is σ = 23825569309920. Its totient is φ = 7878825829500.

The previous prime is 15820682266111. The next prime is 15820682266139. The reversal of 15820682266138 is 83166228602851.

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

It is a super-2 number, since 2×15820682266138² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15820682266139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15757651158 + ... + 15757652161.

It is an arithmetic number, because the mean of its divisors is an integer number (2978196163740).

Almost surely, 2^{15820682266138} is an apocalyptic number.

15820682266138 is a deficient number, since it is larger than the sum of its proper divisors (8004887043782).

15820682266138 is a wasteful number, since it uses less digits than its factorization.

15820682266138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31515303572.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 15820682266138 in words is "fifteen trillion, eight hundred twenty billion, six hundred eighty-two million, two hundred sixty-six thousand, one hundred thirty-eight".