67921701030 has 48 divisors (see below), whose sum is σ = 185890975920. Its totient is φ = 17159166144.

The previous prime is 67921700983. The next prime is 67921701031. The reversal of 67921701030 is 3010712976.

It is a happy number.

It is a super-2 number, since 2×67921701030² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67921701031) 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 23 ways as a sum of consecutive naturals, for example, 19858437 + ... + 19861856.

It is an arithmetic number, because the mean of its divisors is an integer number (3872728665).

Almost surely, 2^67921701030 is an apocalyptic number.

67921701030 is an abundant number, since it is smaller than the sum of its proper divisors (117969274890).

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

67921701030 is a wasteful number, since it uses less digits than its factorization.

67921701030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39720325 (or 39720322 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The spelling of 67921701030 in words is "sixty-seven billion, nine hundred twenty-one million, seven hundred one thousand, thirty".