71521510002 has 8 divisors (see below), whose sum is σ = 143043020016. Its totient is φ = 23840503332.

The previous prime is 71521510001. The next prime is 71521510013. The reversal of 71521510002 is 20001512517.

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

71521510002 is an admirable number.

It is a super-3 number, since 3×71521510002³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (71521510001) 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, 5960125828 + ... + 5960125839.

It is an arithmetic number, because the mean of its divisors is an integer number (17880377502).

Almost surely, 2^71521510002 is an apocalyptic number.

71521510002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71521510002 is a wasteful number, since it uses less digits than its factorization.

71521510002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11920251672.

The product of its (nonzero) digits is 700, while the sum is 24.

The spelling of 71521510002 in words is "seventy-one billion, five hundred twenty-one million, five hundred ten thousand, two".