71625671011 has 4 divisors (see below), whose sum is σ = 71649462024. Its totient is φ = 71601880000.

The previous prime is 71625670973. The next prime is 71625671017. The reversal of 71625671011 is 11017652617.

It is a happy number.

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 71625671011 - 2³³ = 63035736419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71625671017) 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, 11890990 + ... + 11897011.

It is an arithmetic number, because the mean of its divisors is an integer number (17912365506).

Almost surely, 2^71625671011 is an apocalyptic number.

71625671011 is a deficient number, since it is larger than the sum of its proper divisors (23791013).

71625671011 is a wasteful number, since it uses less digits than its factorization.

71625671011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23791012.

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 71625671011 in words is "seventy-one billion, six hundred twenty-five million, six hundred seventy-one thousand, eleven".