3955005078591 has 24 divisors (see below), whose sum is σ = 6136522440624. Its totient is φ = 2259181747200.

The previous prime is 3955005078527. The next prime is 3955005078617. The reversal of 3955005078591 is 1958705005593.

It is not a de Polignac number, because 3955005078591 - 2⁶ = 3955005078527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955005078091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4481760 + ... + 5291141.

It is an arithmetic number, because the mean of its divisors is an integer number (255688435026).

Almost surely, 2^{3955005078591} is an apocalyptic number.

3955005078591 is a deficient number, since it is larger than the sum of its proper divisors (2181517362033).

3955005078591 is a wasteful number, since it uses less digits than its factorization.

3955005078591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9775671 (or 9775664 counting only the distinct ones).

The product of its (nonzero) digits is 8505000, while the sum is 57.

The spelling of 3955005078591 in words is "three trillion, nine hundred fifty-five billion, five million, seventy-eight thousand, five hundred ninety-one".