612444506543 has 16 divisors (see below), whose sum is σ = 663718154880. Its totient is φ = 563240399904.

The previous prime is 612444506539. The next prime is 612444506563. The reversal of 612444506543 is 345605444216.

It is a cyclic number.

It is not a de Polignac number, because 612444506543 - 2² = 612444506539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612444506494 and 612444506503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612444506563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166296 + ... + 2432637.

It is an arithmetic number, because the mean of its divisors is an integer number (41482384680).

Almost surely, 2^612444506543 is an apocalyptic number.

612444506543 is a deficient number, since it is larger than the sum of its proper divisors (51273648337).

612444506543 is a wasteful number, since it uses less digits than its factorization.

612444506543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599158.

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 612444506543 in words is "six hundred twelve billion, four hundred forty-four million, five hundred six thousand, five hundred forty-three".