15217082865228 has 48 divisors (see below), whose sum is σ = 37630985464800. Its totient is φ = 4769435725824.

The previous prime is 15217082865223. The next prime is 15217082865241. The reversal of 15217082865228 is 82256828071251.

It is a super-2 number, since 2×15217082865228² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15217082865221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35340601 + ... + 35768592.

It is an arithmetic number, because the mean of its divisors is an integer number (783978863850).

Almost surely, 2^{15217082865228} is an apocalyptic number.

It is an amenable number.

15217082865228 is an abundant number, since it is smaller than the sum of its proper divisors (22413902599572).

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

15217082865228 is a wasteful number, since it uses less digits than its factorization.

15217082865228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71110266 (or 71110264 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 57.

The spelling of 15217082865228 in words is "fifteen trillion, two hundred seventeen billion, eighty-two million, eight hundred sixty-five thousand, two hundred twenty-eight".