71825064413 has 4 divisors (see below), whose sum is σ = 76050068220. Its totient is φ = 67600060608.

The previous prime is 71825064403. The next prime is 71825064419. The reversal of 71825064413 is 31446052817.

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 58913969284 + 12911095129 = 242722^2 + 113627^2 .

It is a cyclic number.

It is not a de Polignac number, because 71825064413 - 2⁶ = 71825064349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71825064419) 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, 2112501878 + ... + 2112501911.

It is an arithmetic number, because the mean of its divisors is an integer number (19012517055).

Almost surely, 2^71825064413 is an apocalyptic number.

It is an amenable number.

71825064413 is a deficient number, since it is larger than the sum of its proper divisors (4225003807).

71825064413 is a wasteful number, since it uses less digits than its factorization.

71825064413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225003806.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 71825064413 in words is "seventy-one billion, eight hundred twenty-five million, sixty-four thousand, four hundred thirteen".