1020104809871 has 8 divisors (see below), whose sum is σ = 1172986425984. Its totient is φ = 869011283160.

The previous prime is 1020104809837. The next prime is 1020104809907. The reversal of 1020104809871 is 1789084010201.

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 1020104809871 - 2³⁴ = 1002924940687 is a prime.

It is a super-2 number, since 2×1020104809871² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020104809831) 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, 447021125 + ... + 447023406.

It is an arithmetic number, because the mean of its divisors is an integer number (146623303248).

Almost surely, 2^{1020104809871} is an apocalyptic number.

1020104809871 is a deficient number, since it is larger than the sum of its proper divisors (152881616113).

1020104809871 is an equidigital number, since it uses as much as digits as its factorization.

1020104809871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894044701.

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 1020104809871 in words is "one trillion, twenty billion, one hundred four million, eight hundred nine thousand, eight hundred seventy-one".