1626131555117 has 2 divisors, whose sum is σ = 1626131555118. Its totient is φ = 1626131555116.

The previous prime is 1626131555089. The next prime is 1626131555131. The reversal of 1626131555117 is 7115551316261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1618935595876 + 7195959241 = 1272374^2 + 84829^2 .

It is a cyclic number.

It is not a de Polignac number, because 1626131555117 - 2¹² = 1626131551021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1626131555017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813065777558 + 813065777559.

It is an arithmetic number, because the mean of its divisors is an integer number (813065777559).

Almost surely, 2^{1626131555117} is an apocalyptic number.

It is an amenable number.

1626131555117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626131555117 is an equidigital number, since it uses as much as digits as its factorization.

1626131555117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 44.

The spelling of 1626131555117 in words is "one trillion, six hundred twenty-six billion, one hundred thirty-one million, five hundred fifty-five thousand, one hundred seventeen".