1783807871012 has 6 divisors (see below), whose sum is σ = 3121663774278. Its totient is φ = 891903935504.

The previous prime is 1783807870973. The next prime is 1783807871023. The reversal of 1783807871012 is 2101787083871.

It can be written as a sum of positive squares in only one way, i.e., 1695162336256 + 88645534756 = 1301984^2 + 297734^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222975983873 + ... + 222975983880.

It is an arithmetic number, because the mean of its divisors is an integer number (520277295713).

Almost surely, 2^{1783807871012} is an apocalyptic number.

It is an amenable number.

1783807871012 is a deficient number, since it is larger than the sum of its proper divisors (1337855903266).

1783807871012 is a wasteful number, since it uses less digits than its factorization.

1783807871012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445951967757 (or 445951967755 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 53.

The spelling of 1783807871012 in words is "one trillion, seven hundred eighty-three billion, eight hundred seven million, eight hundred seventy-one thousand, twelve".