67387794591 has 16 divisors (see below), whose sum is σ = 96772784864. Its totient is φ = 41464773504.

The previous prime is 67387794571. The next prime is 67387794613. The reversal of 67387794591 is 19549778376.

It is not a de Polignac number, because 67387794591 - 2⁶ = 67387794527 is a prime.

It is a super-2 number, since 2×67387794591² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67387794571) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 274545 + ... + 458421.

It is an arithmetic number, because the mean of its divisors is an integer number (6048299054).

Almost surely, 2^67387794591 is an apocalyptic number.

67387794591 is a deficient number, since it is larger than the sum of its proper divisors (29384990273).

67387794591 is a wasteful number, since it uses less digits than its factorization.

67387794591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193290.

The product of its digits is 80015040, while the sum is 66.

The spelling of 67387794591 in words is "sixty-seven billion, three hundred eighty-seven million, seven hundred ninety-four thousand, five hundred ninety-one".