814029187985 has 16 divisors (see below), whose sum is σ = 1052587584720. Its totient is φ = 600779873280.

The previous prime is 814029187981. The next prime is 814029188003. The reversal of 814029187985 is 589781920418.

It can be written as a sum of positive squares in 8 ways, for example, as 17415816961 + 796613371024 = 131969^2 + 892532^2 .

It is not a de Polignac number, because 814029187985 - 2² = 814029187981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (814029187981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3526580 + ... + 3750309.

It is an arithmetic number, because the mean of its divisors is an integer number (65786724045).

Almost surely, 2^814029187985 is an apocalyptic number.

It is an amenable number.

814029187985 is a deficient number, since it is larger than the sum of its proper divisors (238558396735).

814029187985 is a wasteful number, since it uses less digits than its factorization.

814029187985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278628.

The product of its (nonzero) digits is 11612160, while the sum is 62.

The spelling of 814029187985 in words is "eight hundred fourteen billion, twenty-nine million, one hundred eighty-seven thousand, nine hundred eighty-five".