11315867508 has 168 divisors, whose sum is σ = 32649081696. Its totient is φ = 3401611200.

The previous prime is 11315867429. The next prime is 11315867527. The reversal of 11315867508 is 80576851311.

11315867508 is a `hidden beast` number, since 1 + 1 + 31 + 58 + 67 + 508 = 666.

It is a super-2 number, since 2×11315867508² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4200610 + ... + 4203302.

It is an arithmetic number, because the mean of its divisors is an integer number (194339772).

Almost surely, 2^11315867508 is an apocalyptic number.

11315867508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11315867508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16324540848).

11315867508 is an abundant number, since it is smaller than the sum of its proper divisors (21333214188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11315867508 is a wasteful number, since it uses less digits than its factorization.

11315867508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 11315867508 in words is "eleven billion, three hundred fifteen million, eight hundred sixty-seven thousand, five hundred eight".