215145111415 has 8 divisors (see below), whose sum is σ = 278033682528. Its totient is φ = 158876389920.

The previous prime is 215145111409. The next prime is 215145111431. The reversal of 215145111415 is 514111541512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215145111415 - 2⁷ = 215145111287 is a prime.

It is a Duffinian number.

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, 1654962331 + ... + 1654962460.

It is an arithmetic number, because the mean of its divisors is an integer number (34754210316).

Almost surely, 2^215145111415 is an apocalyptic number.

215145111415 is a deficient number, since it is larger than the sum of its proper divisors (62888571113).

215145111415 is a wasteful number, since it uses less digits than its factorization.

215145111415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309924809.

The product of its digits is 4000, while the sum is 31.

Adding to 215145111415 its reverse (514111541512), we get a palindrome (729256652927).

The spelling of 215145111415 in words is "two hundred fifteen billion, one hundred forty-five million, one hundred eleven thousand, four hundred fifteen".