3205247126440 has 32 divisors (see below), whose sum is σ = 7211857097160. Its totient is φ = 1282089772800.

The previous prime is 3205247126413. The next prime is 3205247126441. The reversal of 3205247126440 is 446217425023.

It can be written as a sum of positive squares in 4 ways, for example, as 3103438908964 + 101808217476 = 1761658^2 + 319074^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3205247126393 and 3205247126402.

It is not an unprimeable number, because it can be changed into a prime (3205247126441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10454530 + ... + 10756750.

Almost surely, 2^{3205247126440} is an apocalyptic number.

It is an amenable number.

3205247126440 is an abundant number, since it is smaller than the sum of its proper divisors (4006609970720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3205247126440 is a wasteful number, since it uses less digits than its factorization.

3205247126440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567373 (or 567369 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 3205247126440 in words is "three trillion, two hundred five billion, two hundred forty-seven million, one hundred twenty-six thousand, four hundred forty".