1012345668789 has 32 divisors (see below), whose sum is σ = 1664049671424. Its totient is φ = 533095948800.

The previous prime is 1012345668767. The next prime is 1012345668793. The reversal of 1012345668789 is 9878665432101.

It is a happy number.

It is not a de Polignac number, because 1012345668789 - 2⁹ = 1012345668277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012345668289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2920974 + ... + 3249119.

It is an arithmetic number, because the mean of its divisors is an integer number (52001552232).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1012345668789 = 2024691337578, but 3⋅1012345668789 = 3037037006367 is not.

Almost surely, 2^{1012345668789} is an apocalyptic number.

It is an amenable number.

1012345668789 is a deficient number, since it is larger than the sum of its proper divisors (651704002635).

1012345668789 is a wasteful number, since it uses less digits than its factorization.

1012345668789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6170717.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 1012345668789 in words is "one trillion, twelve billion, three hundred forty-five million, six hundred sixty-eight thousand, seven hundred eighty-nine".