612478320061 has 2 divisors, whose sum is σ = 612478320062. Its totient is φ = 612478320060.

The previous prime is 612478319989. The next prime is 612478320089. The reversal of 612478320061 is 160023874216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401309580100 + 211168739961 = 633490^2 + 459531^2 .

It is a cyclic number.

It is not a de Polignac number, because 612478320061 - 2²¹ = 612476222909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612478319996 and 612478320023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612478327061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306239160030 + 306239160031.

It is an arithmetic number, because the mean of its divisors is an integer number (306239160031).

Almost surely, 2^612478320061 is an apocalyptic number.

It is an amenable number.

612478320061 is a deficient number, since it is larger than the sum of its proper divisors (1).

612478320061 is an equidigital number, since it uses as much as digits as its factorization.

612478320061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 612478320061 in words is "six hundred twelve billion, four hundred seventy-eight million, three hundred twenty thousand, sixty-one".