3963428350521 has 32 divisors (see below), whose sum is σ = 5334265601280. Its totient is φ = 2617542048000.

The previous prime is 3963428350507. The next prime is 3963428350529. The reversal of 3963428350521 is 1250538243693.

It is not a de Polignac number, because 3963428350521 - 2¹⁵ = 3963428317753 is a prime.

It is a super-2 number, since 2×3963428350521² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3963428350529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432070891 + ... + 432080063.

It is an arithmetic number, because the mean of its divisors is an integer number (166695800040).

Almost surely, 2^{3963428350521} is an apocalyptic number.

It is an amenable number.

3963428350521 is a deficient number, since it is larger than the sum of its proper divisors (1370837250759).

3963428350521 is a wasteful number, since it uses less digits than its factorization.

3963428350521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11857.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 3963428350521 in words is "three trillion, nine hundred sixty-three billion, four hundred twenty-eight million, three hundred fifty thousand, five hundred twenty-one".