1012553404140 has 96 divisors (see below), whose sum is σ = 2912868129024. Its totient is φ = 262617949440.

The previous prime is 1012553404043. The next prime is 1012553404157. The reversal of 1012553404140 is 414043552101.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1012553404098 and 1012553404107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5925295 + ... + 6093785.

It is an arithmetic number, because the mean of its divisors is an integer number (30342376344).

Almost surely, 2^{1012553404140} is an apocalyptic number.

1012553404140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012553404140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456434064512).

1012553404140 is an abundant number, since it is smaller than the sum of its proper divisors (1900314724884).

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

1012553404140 is a wasteful number, since it uses less digits than its factorization.

1012553404140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171247 (or 171245 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1012553404140 its reverse (414043552101), we get a palindrome (1426596956241).

The spelling of 1012553404140 in words is "one trillion, twelve billion, five hundred fifty-three million, four hundred four thousand, one hundred forty".