71090512001 has 4 divisors (see below), whose sum is σ = 71098264404. Its totient is φ = 71082759600.

The previous prime is 71090511983. The next prime is 71090512027. The reversal of 71090512001 is 10021509017.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26830767601 + 44259744400 = 163801^2 + 210380^2 .

It is a cyclic number.

It is not a de Polignac number, because 71090512001 - 2⁶ = 71090511937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71090512061) 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, 3862430 + ... + 3880791.

It is an arithmetic number, because the mean of its divisors is an integer number (17774566101).

Almost surely, 2^71090512001 is an apocalyptic number.

It is an amenable number.

71090512001 is a deficient number, since it is larger than the sum of its proper divisors (7752403).

71090512001 is an equidigital number, since it uses as much as digits as its factorization.

71090512001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752402.

The product of its (nonzero) digits is 630, while the sum is 26.

The spelling of 71090512001 in words is "seventy-one billion, ninety million, five hundred twelve thousand, one".