1660502425951 has 2 divisors, whose sum is σ = 1660502425952. Its totient is φ = 1660502425950.

The previous prime is 1660502425949. The next prime is 1660502425963. The reversal of 1660502425951 is 1595242050661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660502425951 - 2¹ = 1660502425949 is a prime.

Together with 1660502425949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660502425991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830251212975 + 830251212976.

It is an arithmetic number, because the mean of its divisors is an integer number (830251212976).

Almost surely, 2^{1660502425951} is an apocalyptic number.

1660502425951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660502425951 is an equidigital number, since it uses as much as digits as its factorization.

1660502425951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 1660502425951 in words is "one trillion, six hundred sixty billion, five hundred two million, four hundred twenty-five thousand, nine hundred fifty-one".