11205645247 has 8 divisors (see below), whose sum is σ = 11292406416. Its totient is φ = 11118956352.

The previous prime is 11205645169. The next prime is 11205645263. The reversal of 11205645247 is 74254650211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11205645247 - 2¹⁵ = 11205612479 is a prime.

It is a super-2 number, since 2×11205645247² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205645947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317088 + ... + 350650.

It is an arithmetic number, because the mean of its divisors is an integer number (1411550802).

Almost surely, 2^11205645247 is an apocalyptic number.

11205645247 is a deficient number, since it is larger than the sum of its proper divisors (86761169).

11205645247 is a wasteful number, since it uses less digits than its factorization.

11205645247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36137.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 11205645247 in words is "eleven billion, two hundred five million, six hundred forty-five thousand, two hundred forty-seven".