215685676113 has 4 divisors (see below), whose sum is σ = 287580901488. Its totient is φ = 143790450740.

The previous prime is 215685676109. The next prime is 215685676123. The reversal of 215685676113 is 311676586512.

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 215685676113 - 2² = 215685676109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215685676123) 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, 35947612683 + ... + 35947612688.

It is an arithmetic number, because the mean of its divisors is an integer number (71895225372).

Almost surely, 2^215685676113 is an apocalyptic number.

It is an amenable number.

215685676113 is a deficient number, since it is larger than the sum of its proper divisors (71895225375).

215685676113 is an equidigital number, since it uses as much as digits as its factorization.

215685676113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71895225374.

The product of its digits is 1814400, while the sum is 51.

The spelling of 215685676113 in words is "two hundred fifteen billion, six hundred eighty-five million, six hundred seventy-six thousand, one hundred thirteen".