67940017842 has 32 divisors (see below), whose sum is σ = 136630126080. Its totient is φ = 22521983360.

The previous prime is 67940017841. The next prime is 67940017861. The reversal of 67940017842 is 24871004976.

It is a junction number, because it is equal to n+sod(n) for n = 67940017791 and 67940017800.

It is not an unprimeable number, because it can be changed into a prime (67940017841) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 801742 + ... + 882422.

It is an arithmetic number, because the mean of its divisors is an integer number (4269691440).

Almost surely, 2^67940017842 is an apocalyptic number.

67940017842 is an abundant number, since it is smaller than the sum of its proper divisors (68690108238).

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

67940017842 is a wasteful number, since it uses less digits than its factorization.

67940017842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81458.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 67940017842 in words is "sixty-seven billion, nine hundred forty million, seventeen thousand, eight hundred forty-two".