11205413555 has 32 divisors (see below), whose sum is σ = 15798167424. Its totient is φ = 7468747776.

The previous prime is 11205413551. The next prime is 11205413563. The reversal of 11205413555 is 55531450211.

It is not a de Polignac number, because 11205413555 - 2² = 11205413551 is a prime.

It is a super-2 number, since 2×11205413555² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11205413551) 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, 1541309 + ... + 1548561.

It is an arithmetic number, because the mean of its divisors is an integer number (493692732).

Almost surely, 2^11205413555 is an apocalyptic number.

11205413555 is a deficient number, since it is larger than the sum of its proper divisors (4592753869).

11205413555 is a wasteful number, since it uses less digits than its factorization.

11205413555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495.

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 11205413555 its reverse (55531450211), we get a palindrome (66736863766).

The spelling of 11205413555 in words is "eleven billion, two hundred five million, four hundred thirteen thousand, five hundred fifty-five".