10781438820672 has 112 divisors (see below), whose sum is σ = 30735095166720. Its totient is φ = 3315756177408.

The previous prime is 10781438820667. The next prime is 10781438820697. The reversal of 10781438820672 is 27602883418701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4102354 + ... + 6196142.

It is an arithmetic number, because the mean of its divisors is an integer number (274420492560).

Almost surely, 2^{10781438820672} is an apocalyptic number.

10781438820672 is a gapful number since it is divisible by the number (12) 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 10781438820672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15367547583360).

10781438820672 is an abundant number, since it is smaller than the sum of its proper divisors (19953656346048).

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

10781438820672 is a wasteful number, since it uses less digits than its factorization.

10781438820672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095880 (or 2095870 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 10781438820672 in words is "ten trillion, seven hundred eighty-one billion, four hundred thirty-eight million, eight hundred twenty thousand, six hundred seventy-two".