215902966013 has 4 divisors (see below), whose sum is σ = 246746246880. Its totient is φ = 185059685148.

The previous prime is 215902966001. The next prime is 215902966031. The reversal of 215902966013 is 310669209512.

215902966013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 215902966013 - 2¹⁴ = 215902949629 is a prime.

It is a super-2 number, since 2×215902966013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215902966033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15421640423 + ... + 15421640436.

It is an arithmetic number, because the mean of its divisors is an integer number (61686561720).

Almost surely, 2^215902966013 is an apocalyptic number.

It is an amenable number.

215902966013 is a deficient number, since it is larger than the sum of its proper divisors (30843280867).

215902966013 is an equidigital number, since it uses as much as digits as its factorization.

215902966013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30843280866.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 215902966013 in words is "two hundred fifteen billion, nine hundred two million, nine hundred sixty-six thousand, thirteen".