2155958595513 has 96 divisors (see below), whose sum is σ = 3406292697600. Its totient is φ = 1309453516800.

The previous prime is 2155958595463. The next prime is 2155958595517. The reversal of 2155958595513 is 3155958595512.

It is a happy number.

2155958595513 is a `hidden beast` number, since 2 + 15 + 5 + 9 + 58 + 59 + 5 + 513 = 666.

It is not a de Polignac number, because 2155958595513 - 2⁸ = 2155958595257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2155958595517) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 647627833 + ... + 647631161.

It is an arithmetic number, because the mean of its divisors is an integer number (35482215600).

Almost surely, 2^{2155958595513} is an apocalyptic number.

It is an amenable number.

2155958595513 is a deficient number, since it is larger than the sum of its proper divisors (1250334102087).

2155958595513 is a wasteful number, since it uses less digits than its factorization.

2155958595513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783 (or 4780 counting only the distinct ones).

The product of its digits is 60750000, while the sum is 63.

Subtracting 2155958595513 from its reverse (3155958595512), we obtain a palindrome (999999999999).

The spelling of 2155958595513 in words is "two trillion, one hundred fifty-five billion, nine hundred fifty-eight million, five hundred ninety-five thousand, five hundred thirteen".