67424887920 has 80 divisors (see below), whose sum is σ = 225095405472. Its totient is φ = 16596894720.

The previous prime is 67424887903. The next prime is 67424887927. The reversal of 67424887920 is 2978842476.

It is a happy number.

67424887920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×67424887920² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67424887927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10802151 + ... + 10808390.

Almost surely, 2^67424887920 is an apocalyptic number.

67424887920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67424887920 is an abundant number, since it is smaller than the sum of its proper divisors (157670517552).

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

67424887920 is a wasteful number, since it uses less digits than its factorization.

67424887920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21610570 (or 21610564 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 67424887920 in words is "sixty-seven billion, four hundred twenty-four million, eight hundred eighty-seven thousand, nine hundred twenty".