245974326461 has 2 divisors, whose sum is σ = 245974326462. Its totient is φ = 245974326460.

The previous prime is 245974326347. The next prime is 245974326517. The reversal of 245974326461 is 164623479542.

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., 179581012900 + 66393313561 = 423770^2 + 257669^2 .

It is a cyclic number.

It is not a de Polignac number, because 245974326461 - 2¹⁰ = 245974325437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245974326161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122987163230 + 122987163231.

It is an arithmetic number, because the mean of its divisors is an integer number (122987163231).

Almost surely, 2^245974326461 is an apocalyptic number.

It is an amenable number.

245974326461 is a deficient number, since it is larger than the sum of its proper divisors (1).

245974326461 is an equidigital number, since it uses as much as digits as its factorization.

245974326461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 53.

The spelling of 245974326461 in words is "two hundred forty-five billion, nine hundred seventy-four million, three hundred twenty-six thousand, four hundred sixty-one".