67994353153 has 4 divisors (see below), whose sum is σ = 68654492608. Its totient is φ = 67334213700.

The previous prime is 67994353123. The next prime is 67994353159. The reversal of 67994353153 is 35135349976.

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 67994353153 - 2⁵ = 67994353121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67994353094 and 67994353103.

It is not an unprimeable number, because it can be changed into a prime (67994353159) 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, 330069573 + ... + 330069778.

It is an arithmetic number, because the mean of its divisors is an integer number (17163623152).

Almost surely, 2^67994353153 is an apocalyptic number.

It is an amenable number.

67994353153 is a deficient number, since it is larger than the sum of its proper divisors (660139455).

67994353153 is a wasteful number, since it uses less digits than its factorization.

67994353153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660139454.

The product of its digits is 9185400, while the sum is 55.

The spelling of 67994353153 in words is "sixty-seven billion, nine hundred ninety-four million, three hundred fifty-three thousand, one hundred fifty-three".