67561286924 has 6 divisors (see below), whose sum is σ = 118232252124. Its totient is φ = 33780643460.

The previous prime is 67561286909. The next prime is 67561286929. The reversal of 67561286924 is 42968216576.

It is a self number, because there is not a number n which added to its sum of digits gives 67561286924.

It is not an unprimeable number, because it can be changed into a prime (67561286929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445160862 + ... + 8445160869.

It is an arithmetic number, because the mean of its divisors is an integer number (19705375354).

Almost surely, 2^67561286924 is an apocalyptic number.

It is an amenable number.

67561286924 is a deficient number, since it is larger than the sum of its proper divisors (50670965200).

67561286924 is a wasteful number, since it uses less digits than its factorization.

67561286924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16890321735 (or 16890321733 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 67561286924 in words is "sixty-seven billion, five hundred sixty-one million, two hundred eighty-six thousand, nine hundred twenty-four".