215406053254 has 32 divisors (see below), whose sum is σ = 376948657152. Its totient is φ = 90413820000.

The previous prime is 215406053209. The next prime is 215406053293. The reversal of 215406053254 is 452350604512.

It is a congruent number.

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, 567477 + ... + 867664.

It is an arithmetic number, because the mean of its divisors is an integer number (11779645536).

Almost surely, 2^215406053254 is an apocalyptic number.

215406053254 is a deficient number, since it is larger than the sum of its proper divisors (161542603898).

215406053254 is a wasteful number, since it uses less digits than its factorization.

215406053254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435372.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 215406053254 its reverse (452350604512), we get a palindrome (667756657766).

The spelling of 215406053254 in words is "two hundred fifteen billion, four hundred six million, fifty-three thousand, two hundred fifty-four".