1013121400040 has 16 divisors (see below), whose sum is σ = 2279523150180. Its totient is φ = 405248560000.

The previous prime is 1013121400033. The next prime is 1013121400061. The reversal of 1013121400040 is 400041213101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1010149623844 + 2971776196 = 1005062^2 + 54514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1013121399991 and 1013121400018.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12664017461 + ... + 12664017540.

Almost surely, 2^{1013121400040} is an apocalyptic number.

1013121400040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013121400040 is an abundant number, since it is smaller than the sum of its proper divisors (1266401750140).

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

1013121400040 is a wasteful number, since it uses less digits than its factorization.

1013121400040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25328035012 (or 25328035008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1013121400040 its reverse (400041213101), we get a palindrome (1413162613141).

The spelling of 1013121400040 in words is "one trillion, thirteen billion, one hundred twenty-one million, four hundred thousand, forty".