7661786281876 has 12 divisors (see below), whose sum is σ = 13419775111680. Its totient is φ = 3827564821400.

The previous prime is 7661786281871. The next prime is 7661786281879. The reversal of 7661786281876 is 6781826871667.

It is a junction number, because it is equal to n+sod(n) for n = 7661786281799 and 7661786281808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661786281871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832074706 + ... + 832083913.

It is an arithmetic number, because the mean of its divisors is an integer number (1118314592640).

Almost surely, 2^{7661786281876} is an apocalyptic number.

It is an amenable number.

7661786281876 is a deficient number, since it is larger than the sum of its proper divisors (5757988829804).

7661786281876 is a wasteful number, since it uses less digits than its factorization.

7661786281876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664159774 (or 1664159772 counting only the distinct ones).

The product of its digits is 455196672, while the sum is 73.

The spelling of 7661786281876 in words is "seven trillion, six hundred sixty-one billion, seven hundred eighty-six million, two hundred eighty-one thousand, eight hundred seventy-six".