3318644825428 has 6 divisors (see below), whose sum is σ = 5807628444506. Its totient is φ = 1659322412712.

The previous prime is 3318644825423. The next prime is 3318644825453. The reversal of 3318644825428 is 8245284468133.

It can be written as a sum of positive squares in only one way, i.e., 3314628054544 + 4016770884 = 1820612^2 + 63378^2 .

It is a super-2 number, since 2×3318644825428² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318644825423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414830603175 + ... + 414830603182.

Almost surely, 2^{3318644825428} is an apocalyptic number.

It is an amenable number.

3318644825428 is a deficient number, since it is larger than the sum of its proper divisors (2488983619078).

3318644825428 is a wasteful number, since it uses less digits than its factorization.

3318644825428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829661206361 (or 829661206359 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 58.

The spelling of 3318644825428 in words is "three trillion, three hundred eighteen billion, six hundred forty-four million, eight hundred twenty-five thousand, four hundred twenty-eight".