612927381543681 has 16 divisors (see below), whose sum is σ = 818703595987200. Its totient is φ = 407884838049168.

The previous prime is 612927381543583. The next prime is 612927381543683. The reversal of 612927381543681 is 186345183729216.

It is not a de Polignac number, because 612927381543681 - 2¹³ = 612927381535489 is a prime.

It is a super-2 number, since 2×612927381543681² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612927381543683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3354610 + ... + 35172548.

It is an arithmetic number, because the mean of its divisors is an integer number (51168974749200).

Almost surely, 2^{612927381543681} is an apocalyptic number.

It is an amenable number.

612927381543681 is a deficient number, since it is larger than the sum of its proper divisors (205776214443519).

612927381543681 is a wasteful number, since it uses less digits than its factorization.

612927381543681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31829468.

The product of its digits is 104509440, while the sum is 66.

The spelling of 612927381543681 in words is "six hundred twelve trillion, nine hundred twenty-seven billion, three hundred eighty-one million, five hundred forty-three thousand, six hundred eighty-one".