67398969641 has 8 divisors (see below), whose sum is σ = 73665667584. Its totient is φ = 61388055360.

The previous prime is 67398969637. The next prime is 67398969653. The reversal of 67398969641 is 14696989376.

It is a happy number.

67398969641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 67398969641 - 2² = 67398969637 is a prime.

It is a super-2 number, since 2×67398969641² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67398969611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63945365 + ... + 63946418.

It is an arithmetic number, because the mean of its divisors is an integer number (9208208448).

Almost surely, 2^67398969641 is an apocalyptic number.

It is an amenable number.

67398969641 is a deficient number, since it is larger than the sum of its proper divisors (6266697943).

67398969641 is a wasteful number, since it uses less digits than its factorization.

67398969641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127891831.

The product of its digits is 105815808, while the sum is 68.

The spelling of 67398969641 in words is "sixty-seven billion, three hundred ninety-eight million, nine hundred sixty-nine thousand, six hundred forty-one".