215066045631 has 8 divisors (see below), whose sum is σ = 296642821680. Its totient is φ = 138433316672.

The previous prime is 215066045629. The next prime is 215066045639. The reversal of 215066045631 is 136540660512.

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 215066045631 - 2¹ = 215066045629 is a prime.

It is a super-2 number, since 2×215066045631² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215066045631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215066045639) 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 7 ways as a sum of consecutive naturals, for example, 1236011670 + ... + 1236011843.

It is an arithmetic number, because the mean of its divisors is an integer number (37080352710).

Almost surely, 2^215066045631 is an apocalyptic number.

215066045631 is a deficient number, since it is larger than the sum of its proper divisors (81576776049).

215066045631 is a wasteful number, since it uses less digits than its factorization.

215066045631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472023545.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 215066045631 in words is "two hundred fifteen billion, sixty-six million, forty-five thousand, six hundred thirty-one".