4445553213 has 20 divisors (see below), whose sum is σ = 6643922208. Its totient is φ = 2962348200.

The previous prime is 4445553209. The next prime is 4445553221. The reversal of 4445553213 is 3123555444.

4445553213 is a `hidden beast` number, since 44 + 45 + 553 + 21 + 3 = 666.

It is not a de Polignac number, because 4445553213 - 2² = 4445553209 is a prime.

It is a super-2 number, since 2×4445553213² = 39525886739229246738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445553223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184938 + ... + 207588.

Almost surely, 2^4445553213 is an apocalyptic number.

It is an amenable number.

4445553213 is a deficient number, since it is larger than the sum of its proper divisors (2198368995).

4445553213 is a wasteful number, since it uses less digits than its factorization.

4445553213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25086 (or 25077 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 4445553213 is about 66674.9819122585. The cubic root of 4445553213 is about 1644.2780944390.

The spelling of 4445553213 in words is "four billion, four hundred forty-five million, five hundred fifty-three thousand, two hundred thirteen".