215134166460 has 24 divisors (see below), whose sum is σ = 602375666256. Its totient is φ = 57369111040.

The previous prime is 215134166459. The next prime is 215134166531. The reversal of 215134166460 is 64661431512.

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, 1792784661 + ... + 1792784780.

It is an arithmetic number, because the mean of its divisors is an integer number (25098986094).

Almost surely, 2^215134166460 is an apocalyptic number.

215134166460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215134166460 is an abundant number, since it is smaller than the sum of its proper divisors (387241499796).

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

215134166460 is a wasteful number, since it uses less digits than its factorization.

215134166460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585569453 (or 3585569451 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 215134166460 its reverse (64661431512), we get a palindrome (279795597972).

The spelling of 215134166460 in words is "two hundred fifteen billion, one hundred thirty-four million, one hundred sixty-six thousand, four hundred sixty".