64194854064 has 160 divisors (see below), whose sum is σ = 188297852928. Its totient is φ = 18824889600.

The previous prime is 64194854047. The next prime is 64194854071. The reversal of 64194854064 is 46045849146.

It is a junction number, because it is equal to n+sod(n) for n = 64194853998 and 64194854016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1964322 + ... + 1996734.

Almost surely, 2^64194854064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64194854064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94148926464).

64194854064 is an abundant number, since it is smaller than the sum of its proper divisors (124102998864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64194854064 is a wasteful number, since it uses less digits than its factorization.

64194854064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32488 (or 32460 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 64194854064 in words is "sixty-four billion, one hundred ninety-four million, eight hundred fifty-four thousand, sixty-four".