64430664161 has 8 divisors (see below), whose sum is σ = 65036276448. Its totient is φ = 63826776000.

The previous prime is 64430664157. The next prime is 64430664167. The reversal of 64430664161 is 16146603446.

It is a happy number.

64430664161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64430664161 - 2² = 64430664157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64430664167) 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, 355880 + ... + 505481.

It is an arithmetic number, because the mean of its divisors is an integer number (8129534556).

Almost surely, 2^64430664161 is an apocalyptic number.

It is an amenable number.

64430664161 is a deficient number, since it is larger than the sum of its proper divisors (605612287).

64430664161 is a wasteful number, since it uses less digits than its factorization.

64430664161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862063.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 64430664161 in words is "sixty-four billion, four hundred thirty million, six hundred sixty-four thousand, one hundred sixty-one".