215161947028 has 12 divisors (see below), whose sum is σ = 430323894112. Its totient is φ = 92212263000.

The previous prime is 215161946983. The next prime is 215161947031. The reversal of 215161947028 is 820749161512.

215161947028 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842177598 + ... + 3842177653.

Almost surely, 2^215161947028 is an apocalyptic number.

215161947028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

215161947028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

215161947028 is a wasteful number, since it uses less digits than its factorization.

215161947028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684355262 (or 7684355260 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 215161947028 in words is "two hundred fifteen billion, one hundred sixty-one million, nine hundred forty-seven thousand, twenty-eight".