83121558562216 has 16 divisors (see below), whose sum is σ = 158179085324640. Its totient is φ = 40940469142320.

The previous prime is 83121558562183. The next prime is 83121558562241. The reversal of 83121558562216 is 61226585512138.

It is a super-2 number, since 2×83121558562216² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77538766780 + ... + 77538767851.

It is an arithmetic number, because the mean of its divisors is an integer number (9886192832790).

Almost surely, 2^{83121558562216} is an apocalyptic number.

It is an amenable number.

83121558562216 is a deficient number, since it is larger than the sum of its proper divisors (75057526762424).

83121558562216 is a wasteful number, since it uses less digits than its factorization.

83121558562216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155077534704 (or 155077534700 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 55.

The spelling of 83121558562216 in words is "eighty-three trillion, one hundred twenty-one billion, five hundred fifty-eight million, five hundred sixty-two thousand, two hundred sixteen".