4435721573857 has 64 divisors (see below), whose sum is σ = 5498027458560. Its totient is φ = 3493358668800.

The previous prime is 4435721573851. The next prime is 4435721573873. The reversal of 4435721573857 is 7583751275344.

It is a de Polignac number, because none of the positive numbers 2^k-4435721573857 is a prime.

It is a super-2 number, since 2×4435721573857² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4435721573795 and 4435721573804.

It is not an unprimeable number, because it can be changed into a prime (4435721573851) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3259162857 + ... + 3259164217.

It is an arithmetic number, because the mean of its divisors is an integer number (85906679040).

Almost surely, 2^{4435721573857} is an apocalyptic number.

It is an amenable number.

4435721573857 is a deficient number, since it is larger than the sum of its proper divisors (1062305884703).

4435721573857 is a wasteful number, since it uses less digits than its factorization.

4435721573857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its digits is 98784000, while the sum is 61.

The spelling of 4435721573857 in words is "four trillion, four hundred thirty-five billion, seven hundred twenty-one million, five hundred seventy-three thousand, eight hundred fifty-seven".