215016143056 has 40 divisors (see below), whose sum is σ = 489424862304. Its totient is φ = 90216562560.

The previous prime is 215016142997. The next prime is 215016143101. The reversal of 215016143056 is 650341610512.

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, 46985506 + ... + 46990081.

Almost surely, 2^215016143056 is an apocalyptic number.

215016143056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

215016143056 is an abundant number, since it is smaller than the sum of its proper divisors (274408719248).

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

215016143056 is a wasteful number, since it uses less digits than its factorization.

215016143056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93975619 (or 93975613 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 215016143056 its reverse (650341610512), we get a palindrome (865357753568).

The spelling of 215016143056 in words is "two hundred fifteen billion, sixteen million, one hundred forty-three thousand, fifty-six".