215135035412 has 24 divisors (see below), whose sum is σ = 423961128192. Its totient is φ = 94634179200.

The previous prime is 215135035403. The next prime is 215135035433. The reversal of 215135035412 is 214530531512.

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, 78860453 + ... + 78863180.

It is an arithmetic number, because the mean of its divisors is an integer number (17665047008).

Almost surely, 2^215135035412 is an apocalyptic number.

215135035412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215135035412 is a deficient number, since it is larger than the sum of its proper divisors (208826092780).

215135035412 is a wasteful number, since it uses less digits than its factorization.

215135035412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157723679 (or 157723677 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 215135035412 its reverse (214530531512), we get a palindrome (429665566924).

The spelling of 215135035412 in words is "two hundred fifteen billion, one hundred thirty-five million, thirty-five thousand, four hundred twelve".