3961354455520 has 144 divisors (see below), whose sum is σ = 11876346700848. Its totient is φ = 1234707855360.

The previous prime is 3961354455493. The next prime is 3961354455533. The reversal of 3961354455520 is 255544531693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22880797 + ... + 23053276.

It is an arithmetic number, because the mean of its divisors is an integer number (82474629867).

Almost surely, 2^{3961354455520} is an apocalyptic number.

It is an amenable number.

3961354455520 is an abundant number, since it is smaller than the sum of its proper divisors (7914992245328).

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

3961354455520 is a wasteful number, since it uses less digits than its factorization.

3961354455520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45934113 (or 45934098 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 3961354455520 in words is "three trillion, nine hundred sixty-one billion, three hundred fifty-four million, four hundred fifty-five thousand, five hundred twenty".