67561487472 has 40 divisors (see below), whose sum is σ = 175264139520. Its totient is φ = 22426264000.

The previous prime is 67561487467. The next prime is 67561487489. The reversal of 67561487472 is 27478416576.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2933154 + ... + 2956097.

It is an arithmetic number, because the mean of its divisors is an integer number (4381603488).

Almost surely, 2^67561487472 is an apocalyptic number.

It is an amenable number.

67561487472 is an abundant number, since it is smaller than the sum of its proper divisors (107702652048).

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

67561487472 is a wasteful number, since it uses less digits than its factorization.

67561487472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889501 (or 5889495 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 57.

The spelling of 67561487472 in words is "sixty-seven billion, five hundred sixty-one million, four hundred eighty-seven thousand, four hundred seventy-two".