67041009521 has 16 divisors (see below), whose sum is σ = 69774566400. Its totient is φ = 64336241088.

The previous prime is 67041009509. The next prime is 67041009599. The reversal of 67041009521 is 12590014076.

It is not a de Polignac number, because 67041009521 - 2⁶ = 67041009457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67041009221) 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, 6296120 + ... + 6306758.

It is an arithmetic number, because the mean of its divisors is an integer number (4360910400).

Almost surely, 2^67041009521 is an apocalyptic number.

It is an amenable number.

67041009521 is a deficient number, since it is larger than the sum of its proper divisors (2733556879).

67041009521 is a wasteful number, since it uses less digits than its factorization.

67041009521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11968.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 67041009521 in words is "sixty-seven billion, forty-one million, nine thousand, five hundred twenty-one".