65615700070671 has 4 divisors (see below), whose sum is σ = 87487600094232. Its totient is φ = 43743800047112.

The previous prime is 65615700070633. The next prime is 65615700070717. The reversal of 65615700070671 is 17607000751656.

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

It is a cyclic number.

It is not a de Polignac number, because 65615700070671 - 2²³ = 65615691682063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65615700078671) 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, 10935950011776 + ... + 10935950011781.

It is an arithmetic number, because the mean of its divisors is an integer number (21871900023558).

Almost surely, 2^{65615700070671} is an apocalyptic number.

65615700070671 is a deficient number, since it is larger than the sum of its proper divisors (21871900023561).

65615700070671 is a wasteful number, since it uses less digits than its factorization.

65615700070671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21871900023560.

The product of its (nonzero) digits is 1852200, while the sum is 51.

The spelling of 65615700070671 in words is "sixty-five trillion, six hundred fifteen billion, seven hundred million, seventy thousand, six hundred seventy-one".