135550398946969 has 2 divisors, whose sum is σ = 135550398946970. Its totient is φ = 135550398946968.

The previous prime is 135550398946951. The next prime is 135550398946999. The reversal of 135550398946969 is 969649893055531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134444140950025 + 1106257996944 = 11595005^2 + 1051788^2 .

It is a cyclic number.

It is not a de Polignac number, because 135550398946969 - 2⁷ = 135550398946841 is a prime.

It is a super-2 number, since 2×135550398946969² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135550398946892 and 135550398946901.

It is not a weakly prime, because it can be changed into another prime (135550398946999) 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, 67775199473484 + 67775199473485.

It is an arithmetic number, because the mean of its divisors is an integer number (67775199473485).

Almost surely, 2^{135550398946969} is an apocalyptic number.

It is an amenable number.

135550398946969 is a deficient number, since it is larger than the sum of its proper divisors (1).

135550398946969 is an equidigital number, since it uses as much as digits as its factorization.

135550398946969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8503056000, while the sum is 82.

The spelling of 135550398946969 in words is "one hundred thirty-five trillion, five hundred fifty billion, three hundred ninety-eight million, nine hundred forty-six thousand, nine hundred sixty-nine".