67942521674 has 16 divisors (see below), whose sum is σ = 108007137288. Its totient is φ = 31943788032.

The previous prime is 67942521659. The next prime is 67942521679. The reversal of 67942521674 is 47612524976.

It can be written as a sum of positive squares in 4 ways, for example, as 57531380449 + 10411141225 = 239857^2 + 102035^2 .

It is not an unprimeable number, because it can be changed into a prime (67942521679) 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 7 ways as a sum of consecutive naturals, for example, 873509 + ... + 948104.

Almost surely, 2^67942521674 is an apocalyptic number.

67942521674 is a deficient number, since it is larger than the sum of its proper divisors (40064615614).

67942521674 is a wasteful number, since it uses less digits than its factorization.

67942521674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822729.

The product of its digits is 5080320, while the sum is 53.

The spelling of 67942521674 in words is "sixty-seven billion, nine hundred forty-two million, five hundred twenty-one thousand, six hundred seventy-four".