133983817444 has 27 divisors (see below), whose sum is σ = 242874196201. Its totient is φ = 64671593840.

The previous prime is 133983817351. The next prime is 133983817469. The reversal of 133983817444 is 444718389331.

The square root of 133983817444 is 366038.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 70257863844 + 63725953600 = 265062^2 + 252440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21227049 + ... + 21233359.

Almost surely, 2^133983817444 is an apocalyptic number.

133983817444 is the 366038-th square number.

It is an amenable number.

133983817444 is a deficient number, since it is larger than the sum of its proper divisors (108890378757).

133983817444 is an frugal number, since it uses more digits than its factorization.

133983817444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12684 (or 6342 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

The spelling of 133983817444 in words is "one hundred thirty-three billion, nine hundred eighty-three million, eight hundred seventeen thousand, four hundred forty-four".