61686754876 has 6 divisors (see below), whose sum is σ = 107951821040. Its totient is φ = 30843377436.

The previous prime is 61686754823. The next prime is 61686754901. The reversal of 61686754876 is 67845768616.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7710844356 + ... + 7710844363.

Almost surely, 2^61686754876 is an apocalyptic number.

It is an amenable number.

61686754876 is a deficient number, since it is larger than the sum of its proper divisors (46265066164).

61686754876 is a wasteful number, since it uses less digits than its factorization.

61686754876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15421688723 (or 15421688721 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 64.

The spelling of 61686754876 in words is "sixty-one billion, six hundred eighty-six million, seven hundred fifty-four thousand, eight hundred seventy-six".