67060367521 has 6 divisors (see below), whose sum is σ = 78008999010. Its totient is φ = 57480314976.

The previous prime is 67060367501. The next prime is 67060367527. The reversal of 67060367521 is 12576306076.

It can be written as a sum of positive squares in only one way, i.e., 64709184400 + 2351183121 = 254380^2 + 48489^2 .

It is not a de Polignac number, because 67060367521 - 2⁵ = 67060367489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67060367527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684289416 + ... + 684289513.

It is an arithmetic number, because the mean of its divisors is an integer number (13001499835).

Almost surely, 2^67060367521 is an apocalyptic number.

It is an amenable number.

67060367521 is a deficient number, since it is larger than the sum of its proper divisors (10948631489).

67060367521 is a wasteful number, since it uses less digits than its factorization.

67060367521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368578943 (or 1368578936 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 67060367521 in words is "sixty-seven billion, sixty million, three hundred sixty-seven thousand, five hundred twenty-one".