3955818229040 has 80 divisors (see below), whose sum is σ = 9562222666080. Its totient is φ = 1520693053440.

The previous prime is 3955818229021. The next prime is 3955818229049. The reversal of 3955818229040 is 409228185593.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3955818229040² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3955818229049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8780555 + ... + 9220074.

It is an arithmetic number, because the mean of its divisors is an integer number (119527783326).

Almost surely, 2^{3955818229040} is an apocalyptic number.

It is an amenable number.

3955818229040 is an abundant number, since it is smaller than the sum of its proper divisors (5606404437040).

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

3955818229040 is a wasteful number, since it uses less digits than its factorization.

3955818229040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18000750 (or 18000744 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 3955818229040 in words is "three trillion, nine hundred fifty-five billion, eight hundred eighteen million, two hundred twenty-nine thousand, forty".