215641151248668 has 24 divisors (see below), whose sum is σ = 512656321837968. Its totient is φ = 70524150093696.

The previous prime is 215641151248667. The next prime is 215641151248687. The reversal of 215641151248668 is 866842151146512.

It is a super-2 number, since 2×215641151248668² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215641151248661) 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, 169529206321 + ... + 169529207592.

It is an arithmetic number, because the mean of its divisors is an integer number (21360680076582).

Almost surely, 2^{215641151248668} is an apocalyptic number.

It is an amenable number.

215641151248668 is an abundant number, since it is smaller than the sum of its proper divisors (297015170589300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215641151248668 is a wasteful number, since it uses less digits than its factorization.

215641151248668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339058413973 (or 339058413971 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 60.

The spelling of 215641151248668 in words is "two hundred fifteen trillion, six hundred forty-one billion, one hundred fifty-one million, two hundred forty-eight thousand, six hundred sixty-eight".