661362098147 has 2 divisors, whose sum is σ = 661362098148. Its totient is φ = 661362098146.

The previous prime is 661362098129. The next prime is 661362098153. The reversal of 661362098147 is 741890263166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 661362098147 - 2⁶ = 661362098083 is a prime.

It is not a weakly prime, because it can be changed into another prime (661362094147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330681049073 + 330681049074.

It is an arithmetic number, because the mean of its divisors is an integer number (330681049074).

Almost surely, 2^661362098147 is an apocalyptic number.

661362098147 is a deficient number, since it is larger than the sum of its proper divisors (1).

661362098147 is an equidigital number, since it uses as much as digits as its factorization.

661362098147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 661362098147 in words is "six hundred sixty-one billion, three hundred sixty-two million, ninety-eight thousand, one hundred forty-seven".