1012997726844 has 192 divisors, whose sum is σ = 2523102167040. Its totient is φ = 315665475840.

The previous prime is 1012997726833. The next prime is 1012997726879. The reversal of 1012997726844 is 4486277992101.

It is a super-2 number, since 2×1012997726844² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1116865839 + ... + 1116866745.

It is an arithmetic number, because the mean of its divisors is an integer number (13141157120).

Almost surely, 2^{1012997726844} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012997726844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261551083520).

1012997726844 is an abundant number, since it is smaller than the sum of its proper divisors (1510104440196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1012997726844 is a wasteful number, since it uses less digits than its factorization.

1012997726844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 1012997726844 in words is "one trillion, twelve billion, nine hundred ninety-seven million, seven hundred twenty-six thousand, eight hundred forty-four".