4435721573872 has 10 divisors (see below), whose sum is σ = 8594210549408. Its totient is φ = 2217860786928.

The previous prime is 4435721573851. The next prime is 4435721573873. The reversal of 4435721573872 is 2783751275344.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4435721573873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138616299168 + ... + 138616299199.

Almost surely, 2^{4435721573872} is an apocalyptic number.

It is an amenable number.

4435721573872 is a deficient number, since it is larger than the sum of its proper divisors (4158488975536).

4435721573872 is a wasteful number, since it uses less digits than its factorization.

4435721573872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277232598375 (or 277232598369 counting only the distinct ones).

The product of its digits is 39513600, while the sum is 58.

The spelling of 4435721573872 in words is "four trillion, four hundred thirty-five billion, seven hundred twenty-one million, five hundred seventy-three thousand, eight hundred seventy-two".