11387855425536 has 416 divisors, whose sum is σ = 34564814284800. Its totient is φ = 3703403151360.

The previous prime is 11387855425523. The next prime is 11387855425567. The reversal of 11387855425536 is 63552455878311.

11387855425536 is a `hidden beast` number, since 1 + 1 + 3 + 8 + 7 + 8 + 5 + 542 + 55 + 36 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1720476435 + ... + 1720483053.

Almost surely, 2^{11387855425536} is an apocalyptic number.

11387855425536 is a gapful number since it is divisible by the number (16) 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 11387855425536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17282407142400).

11387855425536 is an abundant number, since it is smaller than the sum of its proper divisors (23176958859264).

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

11387855425536 is an equidigital number, since it uses as much as digits as its factorization.

11387855425536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7030 (or 7002 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 63.

The spelling of 11387855425536 in words is "eleven trillion, three hundred eighty-seven billion, eight hundred fifty-five million, four hundred twenty-five thousand, five hundred thirty-six".