215231155014 has 48 divisors (see below), whose sum is σ = 455903305200. Its totient is φ = 67658770368.

The previous prime is 215231155003. The next prime is 215231155021. The reversal of 215231155014 is 410551132512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12769 + ... + 656220.

It is an arithmetic number, because the mean of its divisors is an integer number (9497985525).

Almost surely, 2^215231155014 is an apocalyptic number.

215231155014 is an abundant number, since it is smaller than the sum of its proper divisors (240672150186).

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

215231155014 is a wasteful number, since it uses less digits than its factorization.

215231155014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669109 (or 669066 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 215231155014 its reverse (410551132512), we get a palindrome (625782287526).

The spelling of 215231155014 in words is "two hundred fifteen billion, two hundred thirty-one million, one hundred fifty-five thousand, fourteen".