11503312301530 has 64 divisors (see below), whose sum is σ = 24840686223360. Its totient is φ = 3749924844864.

The previous prime is 11503312301471. The next prime is 11503312301539. The reversal of 11503312301530 is 3510321330511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11503312301539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21123090 + ... + 21660829.

It is an arithmetic number, because the mean of its divisors is an integer number (388135722240).

Almost surely, 2^{11503312301530} is an apocalyptic number.

11503312301530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11503312301530 is an abundant number, since it is smaller than the sum of its proper divisors (13337373921830).

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

11503312301530 is a wasteful number, since it uses less digits than its factorization.

11503312301530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42784123.

The product of its (nonzero) digits is 4050, while the sum is 28.

The spelling of 11503312301530 in words is "eleven trillion, five hundred three billion, three hundred twelve million, three hundred one thousand, five hundred thirty".