164471584840 has 32 divisors (see below), whose sum is σ = 382821795000. Its totient is φ = 63520059904.

The previous prime is 164471584799. The next prime is 164471584843. The reversal of 164471584840 is 48485174461.

It can be written as a sum of positive squares in 4 ways, for example, as 138915725796 + 25555859044 = 372714^2 + 159862^2 .

It is not an unprimeable number, because it can be changed into a prime (164471584843) 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, 70891765 + ... + 70894084.

Almost surely, 2^164471584840 is an apocalyptic number.

164471584840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164471584840 is an abundant number, since it is smaller than the sum of its proper divisors (218350210160).

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

164471584840 is a wasteful number, since it uses less digits than its factorization.

164471584840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141785889 (or 141785885 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 164471584840 in words is "one hundred sixty-four billion, four hundred seventy-one million, five hundred eighty-four thousand, eight hundred forty".