64858469181000 has 256 divisors, whose sum is σ = 220768194366720. Its totient is φ = 15722300160000.

The previous prime is 64858469180987. The next prime is 64858469181031. The reversal of 64858469181000 is 18196485846.

It is a happy number.

It is a super-2 number, since 2×64858469181000² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 640710390 + ... + 640811610.

It is an arithmetic number, because the mean of its divisors is an integer number (862375759245).

Almost surely, 2^{64858469181000} is an apocalyptic number.

64858469181000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64858469181000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110384097183360).

64858469181000 is an abundant number, since it is smaller than the sum of its proper divisors (155909725185720).

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

64858469181000 is a wasteful number, since it uses less digits than its factorization.

64858469181000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120673 (or 120659 counting only the distinct ones).

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

The spelling of 64858469181000 in words is "sixty-four trillion, eight hundred fifty-eight billion, four hundred sixty-nine million, one hundred eighty-one thousand".