612554300649 has 6 divisors (see below), whose sum is σ = 884800656506. Its totient is φ = 408369533760.

The previous prime is 612554300591. The next prime is 612554300693. The reversal of 612554300649 is 946003455216.

612554300649 is a `hidden beast` number, since 6 + 1 + 2 + 554 + 30 + 0 + 64 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 438555195225 + 173999105424 = 662235^2 + 417132^2 .

It is a de Polignac number, because none of the positive numbers 2^k-612554300649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612554300549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34030794472 + ... + 34030794489.

Almost surely, 2^612554300649 is an apocalyptic number.

It is an amenable number.

612554300649 is a deficient number, since it is larger than the sum of its proper divisors (272246355857).

612554300649 is a wasteful number, since it uses less digits than its factorization.

612554300649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68061588967 (or 68061588964 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 612554300649 in words is "six hundred twelve billion, five hundred fifty-four million, three hundred thousand, six hundred forty-nine".