67947727501 has 4 divisors (see below), whose sum is σ = 68059668352. Its totient is φ = 67835786652.

The previous prime is 67947727459. The next prime is 67947727517. The reversal of 67947727501 is 10572774976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67947727501 - 2¹¹ = 67947725453 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 (67947727531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55969515 + ... + 55970728.

It is an arithmetic number, because the mean of its divisors is an integer number (17014917088).

Almost surely, 2^67947727501 is an apocalyptic number.

It is an amenable number.

67947727501 is a deficient number, since it is larger than the sum of its proper divisors (111940851).

67947727501 is a wasteful number, since it uses less digits than its factorization.

67947727501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111940850.

The product of its (nonzero) digits is 5186160, while the sum is 55.

The spelling of 67947727501 in words is "sixty-seven billion, nine hundred forty-seven million, seven hundred twenty-seven thousand, five hundred one".