3981915355041 has 128 divisors (see below), whose sum is σ = 6792068505600. Its totient is φ = 2286754778880.

The previous prime is 3981915355039. The next prime is 3981915355081. The reversal of 3981915355041 is 1405535191893.

It is a happy number.

3981915355041 is a `hidden beast` number, since 3 + 9 + 8 + 19 + 1 + 535 + 50 + 41 = 666.

It is not a de Polignac number, because 3981915355041 - 2¹ = 3981915355039 is a prime.

It is a super-2 number, since 2×3981915355041² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3981915355001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 76562556 + ... + 76614546.

It is an arithmetic number, because the mean of its divisors is an integer number (53063035200).

Almost surely, 2^{3981915355041} is an apocalyptic number.

It is an amenable number.

3981915355041 is a deficient number, since it is larger than the sum of its proper divisors (2810153150559).

3981915355041 is a wasteful number, since it uses less digits than its factorization.

3981915355041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52268 (or 52262 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The spelling of 3981915355041 in words is "three trillion, nine hundred eighty-one billion, nine hundred fifteen million, three hundred fifty-five thousand, forty-one".