215020140346 has 16 divisors (see below), whose sum is σ = 352859320800. Its totient is φ = 97456376880.

The previous prime is 215020140343. The next prime is 215020140373. The reversal of 215020140346 is 643041020512.

It is not an unprimeable number, because it can be changed into a prime (215020140343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13994676 + ... + 14010031.

It is an arithmetic number, because the mean of its divisors is an integer number (22053707550).

Almost surely, 2^215020140346 is an apocalyptic number.

215020140346 is a deficient number, since it is larger than the sum of its proper divisors (137839180454).

215020140346 is a wasteful number, since it uses less digits than its factorization.

215020140346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28005069.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 215020140346 its reverse (643041020512), we get a palindrome (858061160858).

The spelling of 215020140346 in words is "two hundred fifteen billion, twenty million, one hundred forty thousand, three hundred forty-six".