67646469121 has 64 divisors (see below), whose sum is σ = 87643648512. Its totient is φ = 50688000000.

The previous prime is 67646469109. The next prime is 67646469161. The reversal of 67646469121 is 12196464676.

It is not a de Polignac number, because 67646469121 - 2⁷ = 67646468993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67646469161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112556221 + ... + 112556821.

It is an arithmetic number, because the mean of its divisors is an integer number (1369432008).

Almost surely, 2^67646469121 is an apocalyptic number.

It is an amenable number.

67646469121 is a deficient number, since it is larger than the sum of its proper divisors (19997179391).

67646469121 is a wasteful number, since it uses less digits than its factorization.

67646469121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its digits is 2612736, while the sum is 52.

The spelling of 67646469121 in words is "sixty-seven billion, six hundred forty-six million, four hundred sixty-nine thousand, one hundred twenty-one".