71039877121 has 8 divisors (see below), whose sum is σ = 71572545440. Its totient is φ = 70508390112.

The previous prime is 71039877101. The next prime is 71039877133. The reversal of 71039877121 is 12177893017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71039877121 - 2⁷ = 71039876993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71039877101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174420 + ... + 415333.

It is an arithmetic number, because the mean of its divisors is an integer number (8946568180).

Almost surely, 2^71039877121 is an apocalyptic number.

It is an amenable number.

71039877121 is a deficient number, since it is larger than the sum of its proper divisors (532668319).

71039877121 is a wasteful number, since it uses less digits than its factorization.

71039877121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590655.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 71039877121 in words is "seventy-one billion, thirty-nine million, eight hundred seventy-seven thousand, one hundred twenty-one".