3521811712 has 18 divisors (see below), whose sum is σ = 7029866858. Its totient is φ = 1760905728.

The previous prime is 3521811673. The next prime is 3521811721. The reversal of 3521811712 is 2171181253.

It can be written as a sum of positive squares in only one way, i.e., 3403088896 + 118722816 = 58336^2 + 10896^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6878283 + ... + 6878794.

Almost surely, 2^3521811712 is an apocalyptic number.

3521811712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3521811712 is a deficient number, since it is larger than the sum of its proper divisors (3508055146).

3521811712 is an equidigital number, since it uses as much as digits as its factorization.

3521811712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13757093 (or 13757079 counting only the distinct ones).

The product of its digits is 3360, while the sum is 31.

The square root of 3521811712 is about 59344.8541324351. The cubic root of 3521811712 is about 1521.4419188840.

Adding to 3521811712 its reverse (2171181253), we get a palindrome (5692992965).

The spelling of 3521811712 in words is "three billion, five hundred twenty-one million, eight hundred eleven thousand, seven hundred twelve".