8137140781444 has 24 divisors (see below), whose sum is σ = 14859647123328. Its totient is φ = 3891539710080.

The previous prime is 8137140781391. The next prime is 8137140781447. The reversal of 8137140781444 is 4441870417318.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8137140781391 and 8137140781400.

It is not an unprimeable number, because it can be changed into a prime (8137140781447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116529 + ... + 4185799.

It is an arithmetic number, because the mean of its divisors is an integer number (619151963472).

Almost surely, 2^{8137140781444} is an apocalyptic number.

It is an amenable number.

8137140781444 is a deficient number, since it is larger than the sum of its proper divisors (6722506341884).

8137140781444 is a wasteful number, since it uses less digits than its factorization.

8137140781444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098115 (or 3098113 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 52.

The spelling of 8137140781444 in words is "eight trillion, one hundred thirty-seven billion, one hundred forty million, seven hundred eighty-one thousand, four hundred forty-four".