1289949166951 has 2 divisors, whose sum is σ = 1289949166952. Its totient is φ = 1289949166950.

The previous prime is 1289949166921. The next prime is 1289949167021. The reversal of 1289949166951 is 1596619499821.

It is an a-pointer prime, because the next prime (1289949167021) can be obtained adding 1289949166951 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1289949166951 - 2⁷ = 1289949166823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1289949166921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644974583475 + 644974583476.

It is an arithmetic number, because the mean of its divisors is an integer number (644974583476).

Almost surely, 2^{1289949166951} is an apocalyptic number.

1289949166951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289949166951 is an equidigital number, since it uses as much as digits as its factorization.

1289949166951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75582720, while the sum is 70.

The spelling of 1289949166951 in words is "one trillion, two hundred eighty-nine billion, nine hundred forty-nine million, one hundred sixty-six thousand, nine hundred fifty-one".