199144268488 has 64 divisors (see below), whose sum is σ = 430172467200. Its totient is φ = 85541206080.

The previous prime is 199144268473. The next prime is 199144268501. The reversal of 199144268488 is 884862441991.

It is a super-2 number, since 2×199144268488² (a number of 23 digits) contains 22 as substring.

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, 424728 + ... + 760711.

It is an arithmetic number, because the mean of its divisors is an integer number (6721444800).

Almost surely, 2^199144268488 is an apocalyptic number.

It is an amenable number.

199144268488 is an abundant number, since it is smaller than the sum of its proper divisors (231028198712).

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

199144268488 is a wasteful number, since it uses less digits than its factorization.

199144268488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185562 (or 1185558 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 64.

The spelling of 199144268488 in words is "one hundred ninety-nine billion, one hundred forty-four million, two hundred sixty-eight thousand, four hundred eighty-eight".