402155215315 has 16 divisors (see below), whose sum is σ = 551537706240. Its totient is φ = 275758299360.

The previous prime is 402155215307. The next prime is 402155215379. The reversal of 402155215315 is 513512551204.

It is not a de Polignac number, because 402155215315 - 2³ = 402155215307 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, 2926416 + ... + 3060754.

It is an arithmetic number, because the mean of its divisors is an integer number (34471106640).

Almost surely, 2^402155215315 is an apocalyptic number.

402155215315 is a deficient number, since it is larger than the sum of its proper divisors (149382490925).

402155215315 is a wasteful number, since it uses less digits than its factorization.

402155215315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219882.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 402155215315 its reverse (513512551204), we get a palindrome (915667766519).

The spelling of 402155215315 in words is "four hundred two billion, one hundred fifty-five million, two hundred fifteen thousand, three hundred fifteen".