67215825872 has 40 divisors (see below), whose sum is σ = 140274849960. Its totient is φ = 31016839680.

The previous prime is 67215825839. The next prime is 67215825907. The reversal of 67215825872 is 27852851276.

It can be written as a sum of positive squares in 4 ways, for example, as 219750976 + 66996074896 = 14824^2 + 258836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193222 + ... + 1248282.

It is an arithmetic number, because the mean of its divisors is an integer number (3506871249).

Almost surely, 2^67215825872 is an apocalyptic number.

It is an amenable number.

67215825872 is an abundant number, since it is smaller than the sum of its proper divisors (73059024088).

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

67215825872 is a wasteful number, since it uses less digits than its factorization.

67215825872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60951 (or 60945 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 53.

The spelling of 67215825872 in words is "sixty-seven billion, two hundred fifteen million, eight hundred twenty-five thousand, eight hundred seventy-two".