215054265723013 has 4 divisors (see below), whose sum is σ = 215160886580620. Its totient is φ = 214947644865408.

The previous prime is 215054265722999. The next prime is 215054265723041. The reversal of 215054265723013 is 310327562450512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186182804793924 + 28871460929089 = 13644882^2 + 5373217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215054265723013 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 (215054265723413) 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 3 ways as a sum of consecutive naturals, for example, 53310425778 + ... + 53310429811.

It is an arithmetic number, because the mean of its divisors is an integer number (53790221645155).

Almost surely, 2^{215054265723013} is an apocalyptic number.

It is an amenable number.

215054265723013 is a deficient number, since it is larger than the sum of its proper divisors (106620857607).

215054265723013 is a wasteful number, since it uses less digits than its factorization.

215054265723013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106620857606.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 215054265723013 in words is "two hundred fifteen trillion, fifty-four billion, two hundred sixty-five million, seven hundred twenty-three thousand, thirteen".