71170625921 has 8 divisors (see below), whose sum is σ = 72814533120. Its totient is φ = 69545294208.

The previous prime is 71170625891. The next prime is 71170626017. The reversal of 71170625921 is 12952607117.

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 71170625921 - 2⁶ = 71170625857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71170625521) 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, 4636121 + ... + 4651446.

It is an arithmetic number, because the mean of its divisors is an integer number (9101816640).

Almost surely, 2^71170625921 is an apocalyptic number.

It is an amenable number.

71170625921 is a deficient number, since it is larger than the sum of its proper divisors (1643907199).

71170625921 is an equidigital number, since it uses as much as digits as its factorization.

71170625921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9287743.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 71170625921 in words is "seventy-one billion, one hundred seventy million, six hundred twenty-five thousand, nine hundred twenty-one".