612755637044 has 24 divisors (see below), whose sum is σ = 1075126477320. Its totient is φ = 305577426944.

The previous prime is 612755637023. The next prime is 612755637047. The reversal of 612755637044 is 440736557216.

It can be written as a sum of positive squares in 4 ways, for example, as 134680192144 + 478075444900 = 366988^2 + 691430^2 .

It is a junction number, because it is equal to n+sod(n) for n = 612755636983 and 612755637001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612755637047) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3065012 + ... + 3258804.

It is an arithmetic number, because the mean of its divisors is an integer number (44796936555).

Almost surely, 2^612755637044 is an apocalyptic number.

It is an amenable number.

612755637044 is a deficient number, since it is larger than the sum of its proper divisors (462370840276).

612755637044 is a wasteful number, since it uses less digits than its factorization.

612755637044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195859 (or 195857 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 612755637044 in words is "six hundred twelve billion, seven hundred fifty-five million, six hundred thirty-seven thousand, forty-four".