64688159418 has 16 divisors (see below), whose sum is σ = 129378962016. Its totient is φ = 21562279280.

The previous prime is 64688159383. The next prime is 64688159461. The reversal of 64688159418 is 81495188646.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367105 + ... + 513947.

It is an arithmetic number, because the mean of its divisors is an integer number (8086185126).

Almost surely, 2^64688159418 is an apocalyptic number.

64688159418 is an abundant number, since it is smaller than the sum of its proper divisors (64690802598).

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

64688159418 is a wasteful number, since it uses less digits than its factorization.

64688159418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220269.

The product of its digits is 13271040, while the sum is 60.

The spelling of 64688159418 in words is "sixty-four billion, six hundred eighty-eight million, one hundred fifty-nine thousand, four hundred eighteen".