11215400504355 has 32 divisors (see below), whose sum is σ = 20805380651520. Its totient is φ = 5721479676000.

The previous prime is 11215400504303. The next prime is 11215400504359. The reversal of 11215400504355 is 55340500451211.

11215400504355 is a `hidden beast` number, since 1 + 1 + 21 + 540 + 0 + 5 + 0 + 43 + 55 = 666.

It is not a de Polignac number, because 11215400504355 - 2¹⁷ = 11215400373283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11215400504359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1806019521 + ... + 1806025730.

It is an arithmetic number, because the mean of its divisors is an integer number (650168145360).

Almost surely, 2^{11215400504355} is an apocalyptic number.

11215400504355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11215400504355 is a deficient number, since it is larger than the sum of its proper divisors (9589980147165).

11215400504355 is a wasteful number, since it uses less digits than its factorization.

11215400504355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612045288 (or 3612045282 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 11215400504355 its reverse (55340500451211), we get a palindrome (66555900955566).

The spelling of 11215400504355 in words is "eleven trillion, two hundred fifteen billion, four hundred million, five hundred four thousand, three hundred fifty-five".