11503387803720 has 32 divisors (see below), whose sum is σ = 34510163411520. Its totient is φ = 3067570080960.

The previous prime is 11503387803703. The next prime is 11503387803763. The reversal of 11503387803720 is 2730878330511.

It is a self number, because there is not a number n which added to its sum of digits gives 11503387803720.

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 7 ways as a sum of consecutive naturals, for example, 47930782396 + ... + 47930782635.

It is an arithmetic number, because the mean of its divisors is an integer number (1078442606610).

Almost surely, 2^{11503387803720} is an apocalyptic number.

11503387803720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11503387803720 is an abundant number, since it is smaller than the sum of its proper divisors (23006775607800).

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

11503387803720 is a wasteful number, since it uses less digits than its factorization.

11503387803720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95861565045 (or 95861565041 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 11503387803720 in words is "eleven trillion, five hundred three billion, three hundred eighty-seven million, eight hundred three thousand, seven hundred twenty".