1720431471112 has 16 divisors (see below), whose sum is σ = 3229044538860. Its totient is φ = 859352927424.

The previous prime is 1720431471071. The next prime is 1720431471113. The reversal of 1720431471112 is 2111741340271.

It can be written as a sum of positive squares in 2 ways, for example, as 1517198208516 + 203233262596 = 1231746^2 + 450814^2 .

It is not an unprimeable number, because it can be changed into a prime (1720431471113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107842543 + ... + 107858494.

Almost surely, 2^{1720431471112} is an apocalyptic number.

It is an amenable number.

1720431471112 is a deficient number, since it is larger than the sum of its proper divisors (1508613067748).

1720431471112 is a wasteful number, since it uses less digits than its factorization.

1720431471112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215702040 (or 215702036 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 1720431471112 in words is "one trillion, seven hundred twenty billion, four hundred thirty-one million, four hundred seventy-one thousand, one hundred twelve".