68494281924 has 12 divisors (see below), whose sum is σ = 159819991184. Its totient is φ = 22831427304.

The previous prime is 68494281923. The next prime is 68494282027. The reversal of 68494281924 is 42918249486.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (68494281923) 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, 2853928402 + ... + 2853928425.

Almost surely, 2^68494281924 is an apocalyptic number.

It is an amenable number.

68494281924 is an abundant number, since it is smaller than the sum of its proper divisors (91325709260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68494281924 is a wasteful number, since it uses less digits than its factorization.

68494281924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707856834 (or 5707856832 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 57.

The spelling of 68494281924 in words is "sixty-eight billion, four hundred ninety-four million, two hundred eighty-one thousand, nine hundred twenty-four".