11556142203430 has 32 divisors (see below), whose sum is σ = 24026888178720. Its totient is φ = 3955043320320.

The previous prime is 11556142203427. The next prime is 11556142203443. The reversal of 11556142203430 is 3430224165511.

It is a self number, because there is not a number n which added to its sum of digits gives 11556142203430.

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 15 ways as a sum of consecutive naturals, for example, 3089875725 + ... + 3089879464.

It is an arithmetic number, because the mean of its divisors is an integer number (750840255585).

Almost surely, 2^{11556142203430} is an apocalyptic number.

11556142203430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11556142203430 is an abundant number, since it is smaller than the sum of its proper divisors (12470745975290).

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

11556142203430 is a wasteful number, since it uses less digits than its factorization.

11556142203430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179755224.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 11556142203430 its reverse (3430224165511), we get a palindrome (14986366368941).

The spelling of 11556142203430 in words is "eleven trillion, five hundred fifty-six billion, one hundred forty-two million, two hundred three thousand, four hundred thirty".