1985677133299 has 2 divisors, whose sum is σ = 1985677133300. Its totient is φ = 1985677133298.

The previous prime is 1985677133287. The next prime is 1985677133339. The reversal of 1985677133299 is 9923317765891.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1985677133299 - 2⁷ = 1985677133171 is a prime.

It is a super-2 number, since 2×1985677133299² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1985677133249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992838566649 + 992838566650.

It is an arithmetic number, because the mean of its divisors is an integer number (992838566650).

Almost surely, 2^{1985677133299} is an apocalyptic number.

1985677133299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1985677133299 is an equidigital number, since it uses as much as digits as its factorization.

1985677133299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 154314720, while the sum is 70.

The spelling of 1985677133299 in words is "one trillion, nine hundred eighty-five billion, six hundred seventy-seven million, one hundred thirty-three thousand, two hundred ninety-nine".