1871617316020 has 48 divisors (see below), whose sum is σ = 3948859429200. Its totient is φ = 745132308480.

The previous prime is 1871617316017. The next prime is 1871617316057. The reversal of 1871617316020 is 206137161781.

It can be written as a sum of positive squares in 8 ways, for example, as 50299724176 + 1821317591844 = 224276^2 + 1349562^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14173500 + ... + 14304940.

It is an arithmetic number, because the mean of its divisors is an integer number (82267904775).

Almost surely, 2^{1871617316020} is an apocalyptic number.

1871617316020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1871617316020 is an abundant number, since it is smaller than the sum of its proper divisors (2077242113180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1871617316020 is a wasteful number, since it uses less digits than its factorization.

1871617316020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134788 (or 134786 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 1871617316020 in words is "one trillion, eight hundred seventy-one billion, six hundred seventeen million, three hundred sixteen thousand, twenty".