11563055251 has 8 divisors (see below), whose sum is σ = 12615611904. Its totient is φ = 10510726920.

The previous prime is 11563055249. The next prime is 11563055269. The reversal of 11563055251 is 15255036511.

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 11563055251 - 2¹ = 11563055249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11563055201) 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, 59110 + ... + 163156.

It is an arithmetic number, because the mean of its divisors is an integer number (1576951488).

Almost surely, 2^11563055251 is an apocalyptic number.

11563055251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11563055251 is a deficient number, since it is larger than the sum of its proper divisors (1052556653).

11563055251 is a wasteful number, since it uses less digits than its factorization.

11563055251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114161.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 11563055251 in words is "eleven billion, five hundred sixty-three million, fifty-five thousand, two hundred fifty-one".