71852130121 has 8 divisors (see below), whose sum is σ = 75850544000. Its totient is φ = 67875388560.

The previous prime is 71852130101. The next prime is 71852130127. The reversal of 71852130121 is 12103125817.

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 71852130121 - 2¹⁵ = 71852097353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71852130127) 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, 5411265 + ... + 5424526.

It is an arithmetic number, because the mean of its divisors is an integer number (9481318000).

Almost surely, 2^71852130121 is an apocalyptic number.

It is an amenable number.

71852130121 is a deficient number, since it is larger than the sum of its proper divisors (3998413879).

71852130121 is a wasteful number, since it uses less digits than its factorization.

71852130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10836159.

The product of its (nonzero) digits is 3360, while the sum is 31.

Adding to 71852130121 its reverse (12103125817), we get a palindrome (83955255938).

The spelling of 71852130121 in words is "seventy-one billion, eight hundred fifty-two million, one hundred thirty thousand, one hundred twenty-one".