64182801840 has 80 divisors (see below), whose sum is σ = 204344191968. Its totient is φ = 16652832768.

The previous prime is 64182801829. The next prime is 64182801871. The reversal of 64182801840 is 4810828146.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 64182801792 and 64182801801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3605017 + ... + 3622776.

Almost surely, 2^64182801840 is an apocalyptic number.

64182801840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64182801840 is an abundant number, since it is smaller than the sum of its proper divisors (140161390128).

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

64182801840 is a wasteful number, since it uses less digits than its factorization.

64182801840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227846 (or 7227840 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The spelling of 64182801840 in words is "sixty-four billion, one hundred eighty-two million, eight hundred one thousand, eight hundred forty".