64199877893284 has 96 divisors (see below), whose sum is σ = 133699849661952. Its totient is φ = 26400705408000.

The previous prime is 64199877893273. The next prime is 64199877893293. The reversal of 64199877893284 is 48239877899146.

It is a super-3 number, since 3×64199877893284³ (a number of 42 digits) contains 333 as substring.

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, 914740674 + ... + 914810854.

It is an arithmetic number, because the mean of its divisors is an integer number (1392706767312).

Almost surely, 2^{64199877893284} 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 64199877893284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66849924830976).

64199877893284 is an abundant number, since it is smaller than the sum of its proper divisors (69499971768668).

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

64199877893284 is a wasteful number, since it uses less digits than its factorization.

64199877893284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83357 (or 83355 counting only the distinct ones).

The product of its digits is 10534551552, while the sum is 85.

The spelling of 64199877893284 in words is "sixty-four trillion, one hundred ninety-nine billion, eight hundred seventy-seven million, eight hundred ninety-three thousand, two hundred eighty-four".