215503430145 has 16 divisors (see below), whose sum is σ = 344826865152. Its totient is φ = 114928037120.

The previous prime is 215503430123. The next prime is 215503430167. The reversal of 215503430145 is 541034305512.

It is an interprime number because it is at equal distance from previous prime (215503430123) and next prime (215503430167).

It is not a de Polignac number, because 215503430145 - 2⁷ = 215503430017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190641 + ... + 683630.

It is an arithmetic number, because the mean of its divisors is an integer number (21551679072).

Almost surely, 2^215503430145 is an apocalyptic number.

It is an amenable number.

215503430145 is a deficient number, since it is larger than the sum of its proper divisors (129323435007).

215503430145 is a wasteful number, since it uses less digits than its factorization.

215503430145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890712.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 215503430145 its reverse (541034305512), we get a palindrome (756537735657).

The spelling of 215503430145 in words is "two hundred fifteen billion, five hundred three million, four hundred thirty thousand, one hundred forty-five".