67997421370 has 32 divisors (see below), whose sum is σ = 122714470080. Its totient is φ = 27128131200.

The previous prime is 67997421347. The next prime is 67997421379. The reversal of 67997421370 is 7312479976.

It is not an unprimeable number, because it can be changed into a prime (67997421379) 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 in 15 ways as a sum of consecutive naturals, for example, 9415621 + ... + 9422839.

It is an arithmetic number, because the mean of its divisors is an integer number (3834827190).

Almost surely, 2^67997421370 is an apocalyptic number.

67997421370 is a deficient number, since it is larger than the sum of its proper divisors (54717048710).

67997421370 is a wasteful number, since it uses less digits than its factorization.

67997421370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 67997421370 in words is "sixty-seven billion, nine hundred ninety-seven million, four hundred twenty-one thousand, three hundred seventy".