15717161021212 has 48 divisors (see below), whose sum is σ = 32158297080000. Its totient is φ = 6718609918272.

The previous prime is 15717161021203. The next prime is 15717161021257. The reversal of 15717161021212 is 21212016171751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14190787 + ... + 15258202.

It is an arithmetic number, because the mean of its divisors is an integer number (669964522500).

Almost surely, 2^{15717161021212} is an apocalyptic number.

It is an amenable number.

15717161021212 is an abundant number, since it is smaller than the sum of its proper divisors (16441136058788).

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

15717161021212 is a wasteful number, since it uses less digits than its factorization.

15717161021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29449403 (or 29449387 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 37.

Adding to 15717161021212 its reverse (21212016171751), we get a palindrome (36929177192963).

The spelling of 15717161021212 in words is "fifteen trillion, seven hundred seventeen billion, one hundred sixty-one million, twenty-one thousand, two hundred twelve".