67761369381 has 8 divisors (see below), whose sum is σ = 91829615584. Its totient is φ = 44433684720.

The previous prime is 67761369367. The next prime is 67761369391. The reversal of 67761369381 is 18396316776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67761369381 - 2⁹ = 67761368869 is a prime.

It is a super-3 number, since 3×67761369381³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67761369311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185140171 + ... + 185140536.

It is an arithmetic number, because the mean of its divisors is an integer number (11478701948).

Almost surely, 2^67761369381 is an apocalyptic number.

67761369381 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

67761369381 is a deficient number, since it is larger than the sum of its proper divisors (24068246203).

67761369381 is a wasteful number, since it uses less digits than its factorization.

67761369381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370280771.

The product of its digits is 6858432, while the sum is 57.

The spelling of 67761369381 in words is "sixty-seven billion, seven hundred sixty-one million, three hundred sixty-nine thousand, three hundred eighty-one".