67637671420 has 36 divisors (see below), whose sum is σ = 156125638872. Its totient is φ = 24595516000.

The previous prime is 67637671399. The next prime is 67637671433. The reversal of 67637671420 is 2417673676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13972306 + ... + 13977145.

It is an arithmetic number, because the mean of its divisors is an integer number (4336823302).

Almost surely, 2^67637671420 is an apocalyptic number.

It is an amenable number.

67637671420 is an abundant number, since it is smaller than the sum of its proper divisors (88487967452).

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

67637671420 is a wasteful number, since it uses less digits than its factorization.

67637671420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27949482 (or 27949469 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 67637671420 in words is "sixty-seven billion, six hundred thirty-seven million, six hundred seventy-one thousand, four hundred twenty".