618497976461 has 2 divisors, whose sum is σ = 618497976462. Its totient is φ = 618497976460.

The previous prime is 618497976443. The next prime is 618497976479. The reversal of 618497976461 is 164679794816.

It is a balanced prime because it is at equal distance from previous prime (618497976443) and next prime (618497976479).

It can be written as a sum of positive squares in only one way, i.e., 310478526436 + 308019450025 = 557206^2 + 554995^2 .

It is a cyclic number.

It is not a de Polignac number, because 618497976461 - 2³⁴ = 601318107277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618497976391 and 618497976400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618497976401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309248988230 + 309248988231.

It is an arithmetic number, because the mean of its divisors is an integer number (309248988231).

Almost surely, 2^618497976461 is an apocalyptic number.

It is an amenable number.

618497976461 is a deficient number, since it is larger than the sum of its proper divisors (1).

618497976461 is an equidigital number, since it uses as much as digits as its factorization.

618497976461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 68.

The spelling of 618497976461 in words is "six hundred eighteen billion, four hundred ninety-seven million, nine hundred seventy-six thousand, four hundred sixty-one".