64416161421 has 24 divisors (see below), whose sum is σ = 96135047424. Its totient is φ = 41520732480.

The previous prime is 64416161417. The next prime is 64416161429. The reversal of 64416161421 is 12416161446.

64416161421 is a `hidden beast` number, since 6 + 4 + 4 + 1 + 616 + 14 + 21 = 666.

It is not a de Polignac number, because 64416161421 - 2² = 64416161417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64416161429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200830 + ... + 411296.

It is an arithmetic number, because the mean of its divisors is an integer number (4005626976).

Almost surely, 2^64416161421 is an apocalyptic number.

It is an amenable number.

64416161421 is a deficient number, since it is larger than the sum of its proper divisors (31718886003).

64416161421 is a wasteful number, since it uses less digits than its factorization.

64416161421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211601 (or 211598 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The spelling of 64416161421 in words is "sixty-four billion, four hundred sixteen million, one hundred sixty-one thousand, four hundred twenty-one".