1012019983817 has 2 divisors, whose sum is σ = 1012019983818. Its totient is φ = 1012019983816.

The previous prime is 1012019983813. The next prime is 1012019983837. The reversal of 1012019983817 is 7183899102101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 953325715456 + 58694268361 = 976384^2 + 242269^2 .

It is an emirp because it is prime and its reverse (7183899102101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012019983817 - 2² = 1012019983813 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012019983813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506009991908 + 506009991909.

It is an arithmetic number, because the mean of its divisors is an integer number (506009991909).

Almost surely, 2^{1012019983817} is an apocalyptic number.

It is an amenable number.

1012019983817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012019983817 is an equidigital number, since it uses as much as digits as its factorization.

1012019983817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 50.

The spelling of 1012019983817 in words is "one trillion, twelve billion, nineteen million, nine hundred eighty-three thousand, eight hundred seventeen".