64473629169221 has 8 divisors (see below), whose sum is σ = 67357017383040. Its totient is φ = 61596923200912.

The previous prime is 64473629169211. The next prime is 64473629169227. The reversal of 64473629169221 is 12296192637446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64473629169221 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 (64473629169227) 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, 1670541650 + ... + 1670580243.

It is an arithmetic number, because the mean of its divisors is an integer number (8419627172880).

Almost surely, 2^{64473629169221} is an apocalyptic number.

It is an amenable number.

64473629169221 is a deficient number, since it is larger than the sum of its proper divisors (2883388213819).

64473629169221 is a wasteful number, since it uses less digits than its factorization.

64473629169221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341122755.

The product of its digits is 47029248, while the sum is 62.

The spelling of 64473629169221 in words is "sixty-four trillion, four hundred seventy-three billion, six hundred twenty-nine million, one hundred sixty-nine thousand, two hundred twenty-one".