11285137517 has 4 divisors (see below), whose sum is σ = 11674280220. Its totient is φ = 10895994816.

The previous prime is 11285137477. The next prime is 11285137543. The reversal of 11285137517 is 71573158211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7710771721 + 3574365796 = 87811^2 + 59786^2 .

It is a cyclic number.

It is not a de Polignac number, because 11285137517 - 2⁶ = 11285137453 is a prime.

It is a super-3 number, since 3×11285137517³ (a number of 31 digits) contains 333 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 (11285137117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194571308 + ... + 194571365.

It is an arithmetic number, because the mean of its divisors is an integer number (2918570055).

Almost surely, 2^11285137517 is an apocalyptic number.

It is an amenable number.

11285137517 is a deficient number, since it is larger than the sum of its proper divisors (389142703).

11285137517 is an equidigital number, since it uses as much as digits as its factorization.

11285137517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389142702.

The product of its digits is 58800, while the sum is 41.

The spelling of 11285137517 in words is "eleven billion, two hundred eighty-five million, one hundred thirty-seven thousand, five hundred seventeen".