215535204054 has 12 divisors (see below), whose sum is σ = 466992942156. Its totient is φ = 71845068012.

The previous prime is 215535204043. The next prime is 215535204097. The reversal of 215535204054 is 450402535512.

215535204054 is a `hidden beast` number, since 2 + 1 + 553 + 52 + 0 + 4 + 0 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5987088984 + ... + 5987089019.

It is an arithmetic number, because the mean of its divisors is an integer number (38916078513).

Almost surely, 2^215535204054 is an apocalyptic number.

215535204054 is an abundant number, since it is smaller than the sum of its proper divisors (251457738102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215535204054 is a wasteful number, since it uses less digits than its factorization.

215535204054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11974178011 (or 11974178008 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 215535204054 its reverse (450402535512), we get a palindrome (665937739566).

The spelling of 215535204054 in words is "two hundred fifteen billion, five hundred thirty-five million, two hundred four thousand, fifty-four".