612564217633 has 2 divisors, whose sum is σ = 612564217634. Its totient is φ = 612564217632.

The previous prime is 612564217589. The next prime is 612564217663. The reversal of 612564217633 is 336712465216.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580060454689 + 32503762944 = 761617^2 + 180288^2 .

It is a cyclic number.

It is not a de Polignac number, because 612564217633 - 2²¹ = 612562120481 is a prime.

It is not a weakly prime, because it can be changed into another prime (612564217663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306282108816 + 306282108817.

It is an arithmetic number, because the mean of its divisors is an integer number (306282108817).

Almost surely, 2^612564217633 is an apocalyptic number.

It is an amenable number.

612564217633 is a deficient number, since it is larger than the sum of its proper divisors (1).

612564217633 is an equidigital number, since it uses as much as digits as its factorization.

612564217633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

The spelling of 612564217633 in words is "six hundred twelve billion, five hundred sixty-four million, two hundred seventeen thousand, six hundred thirty-three".