2155100451013 has 4 divisors (see below), whose sum is σ = 2268526790560. Its totient is φ = 2041674111468.

The previous prime is 2155100450989. The next prime is 2155100451017. The reversal of 2155100451013 is 3101540015512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2155100451013 - 2⁵ = 2155100450981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155100451017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56713169745 + ... + 56713169782.

It is an arithmetic number, because the mean of its divisors is an integer number (567131697640).

Almost surely, 2^{2155100451013} is an apocalyptic number.

It is an amenable number.

2155100451013 is a deficient number, since it is larger than the sum of its proper divisors (113426339547).

2155100451013 is a wasteful number, since it uses less digits than its factorization.

2155100451013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113426339546.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 2155100451013 its reverse (3101540015512), we get a palindrome (5256640466525).

The spelling of 2155100451013 in words is "two trillion, one hundred fifty-five billion, one hundred million, four hundred fifty-one thousand, thirteen".