67421873952 has 72 divisors (see below), whose sum is σ = 200067102144. Its totient is φ = 21496827264.

The previous prime is 67421873947. The next prime is 67421873963. The reversal of 67421873952 is 25937812476.

It is a happy number.

67421873952 is a `hidden beast` number, since 6 + 74 + 2 + 187 + 395 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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, 5082588 + ... + 5095835.

It is an arithmetic number, because the mean of its divisors is an integer number (2778709752).

Almost surely, 2^67421873952 is an apocalyptic number.

It is an amenable number.

67421873952 is an abundant number, since it is smaller than the sum of its proper divisors (132645228192).

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

67421873952 is a wasteful number, since it uses less digits than its factorization.

67421873952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10178462 (or 10178451 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 67421873952 in words is "sixty-seven billion, four hundred twenty-one million, eight hundred seventy-three thousand, nine hundred fifty-two".