215400410533455 has 96 divisors (see below), whose sum is σ = 411758760462336. Its totient is φ = 94184270264832.

The previous prime is 215400410533421. The next prime is 215400410533463. The reversal of 215400410533455 is 554335014004512.

It is not a de Polignac number, because 215400410533455 - 2²⁴ = 215400393756239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2380780099 + ... + 2380870571.

It is an arithmetic number, because the mean of its divisors is an integer number (4289153754816).

Almost surely, 2^{215400410533455} is an apocalyptic number.

215400410533455 is a deficient number, since it is larger than the sum of its proper divisors (196358349928881).

215400410533455 is a wasteful number, since it uses less digits than its factorization.

215400410533455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133397 (or 133374 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 215400410533455 its reverse (554335014004512), we get a palindrome (769735424537967).

The spelling of 215400410533455 in words is "two hundred fifteen trillion, four hundred billion, four hundred ten million, five hundred thirty-three thousand, four hundred fifty-five".