7681461971039 has 4 divisors (see below), whose sum is σ = 7681467597024. Its totient is φ = 7681456345056.

The previous prime is 7681461970943. The next prime is 7681461971107. The reversal of 7681461971039 is 9301791641867.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7681461971039 - 2¹² = 7681461966943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681461971639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684839 + ... + 3978935.

It is an arithmetic number, because the mean of its divisors is an integer number (1920366899256).

Almost surely, 2^{7681461971039} is an apocalyptic number.

7681461971039 is a deficient number, since it is larger than the sum of its proper divisors (5625985).

7681461971039 is a wasteful number, since it uses less digits than its factorization.

7681461971039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625984.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 7681461971039 in words is "seven trillion, six hundred eighty-one billion, four hundred sixty-one million, nine hundred seventy-one thousand, thirty-nine".