67601988565 has 16 divisors (see below), whose sum is σ = 81518950656. Its totient is φ = 53817825600.

The previous prime is 67601988563. The next prime is 67601988593. The reversal of 67601988565 is 56588910676.

It is not a de Polignac number, because 67601988565 - 2¹ = 67601988563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67601988563) 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, 857604 + ... + 933106.

It is an arithmetic number, because the mean of its divisors is an integer number (5094934416).

Almost surely, 2^67601988565 is an apocalyptic number.

It is an amenable number.

67601988565 is a deficient number, since it is larger than the sum of its proper divisors (13916962091).

67601988565 is a wasteful number, since it uses less digits than its factorization.

67601988565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76380.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 67601988565 in words is "sixty-seven billion, six hundred one million, nine hundred eighty-eight thousand, five hundred sixty-five".