84121310616586 has 4 divisors (see below), whose sum is σ = 126181965924882. Its totient is φ = 42060655308292.

The previous prime is 84121310616557. The next prime is 84121310616611. The reversal of 84121310616586 is 68561601312148.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74046558510961 + 10074752105625 = 8605031^2 + 3174075^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21030327654145 + ... + 21030327654148.

Almost surely, 2^{84121310616586} is an apocalyptic number.

84121310616586 is a deficient number, since it is larger than the sum of its proper divisors (42060655308296).

84121310616586 is a wasteful number, since it uses less digits than its factorization.

84121310616586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42060655308295.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 84121310616586 in words is "eighty-four trillion, one hundred twenty-one billion, three hundred ten million, six hundred sixteen thousand, five hundred eighty-six".