15205210002 has 20 divisors (see below), whose sum is σ = 34070933886. Its totient is φ = 5068403280.

The previous prime is 15205209997. The next prime is 15205210019. The reversal of 15205210002 is 20001250251.

It can be written as a sum of positive squares in only one way, i.e., 11979083601 + 3226126401 = 109449^2 + 56799^2 .

It is a super-2 number, since 2×15205210002² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 46929499 + ... + 46929822.

Almost surely, 2^15205210002 is an apocalyptic number.

15205210002 is an abundant number, since it is smaller than the sum of its proper divisors (18865723884).

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

15205210002 is an equidigital number, since it uses as much as digits as its factorization.

15205210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93859335 (or 93859326 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 15205210002 its reverse (20001250251), we get a palindrome (35206460253).

The spelling of 15205210002 in words is "fifteen billion, two hundred five million, two hundred ten thousand, two".