215066360421 has 48 divisors (see below), whose sum is σ = 345420054720. Its totient is φ = 127834536960.

The previous prime is 215066360401. The next prime is 215066360449. The reversal of 215066360421 is 124063660512.

215066360421 is a `hidden beast` number, since 2 + 15 + 0 + 6 + 636 + 0 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 215066360421 - 2⁵ = 215066360389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215066360401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17093685 + ... + 17106261.

It is an arithmetic number, because the mean of its divisors is an integer number (7196251140).

Almost surely, 2^215066360421 is an apocalyptic number.

It is an amenable number.

215066360421 is a deficient number, since it is larger than the sum of its proper divisors (130353694299).

215066360421 is a wasteful number, since it uses less digits than its factorization.

215066360421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906 (or 15903 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 215066360421 in words is "two hundred fifteen billion, sixty-six million, three hundred sixty thousand, four hundred twenty-one".