67996721500 has 24 divisors (see below), whose sum is σ = 148504840848. Its totient is φ = 27198688400.

The previous prime is 67996721459. The next prime is 67996721581. The reversal of 67996721500 is 512769976.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67996222 + ... + 67997221.

It is an arithmetic number, because the mean of its divisors is an integer number (6187701702).

Almost surely, 2^67996721500 is an apocalyptic number.

It is an amenable number.

67996721500 is an abundant number, since it is smaller than the sum of its proper divisors (80508119348).

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

67996721500 is a wasteful number, since it uses less digits than its factorization.

67996721500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135993462 (or 135993450 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 67996721500 in words is "sixty-seven billion, nine hundred ninety-six million, seven hundred twenty-one thousand, five hundred".