15216216716 has 6 divisors (see below), whose sum is σ = 26628379260. Its totient is φ = 7608108356.

The previous prime is 15216216689. The next prime is 15216216721. The reversal of 15216216716 is 61761261251.

It is a super-2 number, since 2×15216216716² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15216216716.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902027086 + ... + 1902027093.

It is an arithmetic number, because the mean of its divisors is an integer number (4438063210).

Almost surely, 2^15216216716 is an apocalyptic number.

It is an amenable number.

15216216716 is a deficient number, since it is larger than the sum of its proper divisors (11412162544).

15216216716 is a wasteful number, since it uses less digits than its factorization.

15216216716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804054183 (or 3804054181 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

Adding to 15216216716 its reverse (61761261251), we get a palindrome (76977477967).

The spelling of 15216216716 in words is "fifteen billion, two hundred sixteen million, two hundred sixteen thousand, seven hundred sixteen".