215215512202645 has 8 divisors (see below), whose sum is σ = 258717333322656. Its totient is φ = 171866597309136.

The previous prime is 215215512202633. The next prime is 215215512202661. The reversal of 215215512202645 is 546202215512512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215215512202645 - 2⁷ = 215215512202517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38226553527 + ... + 38226559156.

It is an arithmetic number, because the mean of its divisors is an integer number (32339666665332).

Almost surely, 2^{215215512202645} is an apocalyptic number.

It is an amenable number.

215215512202645 is a deficient number, since it is larger than the sum of its proper divisors (43501821120011).

215215512202645 is an equidigital number, since it uses as much as digits as its factorization.

215215512202645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76453113251.

The product of its (nonzero) digits is 480000, while the sum is 43.

The spelling of 215215512202645 in words is "two hundred fifteen trillion, two hundred fifteen billion, five hundred twelve million, two hundred two thousand, six hundred forty-five".