67146607969 has 4 divisors (see below), whose sum is σ = 76738980544. Its totient is φ = 57554235396.

The previous prime is 67146607963. The next prime is 67146608017. The reversal of 67146607969 is 96970664176.

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 not a de Polignac number, because 67146607969 - 2⁵ = 67146607937 is a prime.

It is a super-2 number, since 2×67146607969² (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 (67146607963) 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, 4796186277 + ... + 4796186290.

It is an arithmetic number, because the mean of its divisors is an integer number (19184745136).

Almost surely, 2^67146607969 is an apocalyptic number.

It is an amenable number.

67146607969 is a deficient number, since it is larger than the sum of its proper divisors (9592372575).

67146607969 is an equidigital number, since it uses as much as digits as its factorization.

67146607969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9592372574.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 67146607969 in words is "sixty-seven billion, one hundred forty-six million, six hundred seven thousand, nine hundred sixty-nine".