71115052061 has 4 divisors (see below), whose sum is σ = 71209746624. Its totient is φ = 71020357500.

The previous prime is 71115052031. The next prime is 71115052093. The reversal of 71115052061 is 16025051117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71115052061 - 2²² = 71110857757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71115052031) 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, 47346155 + ... + 47347656.

It is an arithmetic number, because the mean of its divisors is an integer number (17802436656).

Almost surely, 2^71115052061 is an apocalyptic number.

It is an amenable number.

71115052061 is a deficient number, since it is larger than the sum of its proper divisors (94694563).

71115052061 is an equidigital number, since it uses as much as digits as its factorization.

71115052061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94694562.

The product of its (nonzero) digits is 2100, while the sum is 29.

The spelling of 71115052061 in words is "seventy-one billion, one hundred fifteen million, fifty-two thousand, sixty-one".