11801509445103 has 16 divisors (see below), whose sum is σ = 18421868403456. Its totient is φ = 6579238714560.

The previous prime is 11801509445087. The next prime is 11801509445123. The reversal of 11801509445103 is 30154490510811.

It is not a de Polignac number, because 11801509445103 - 2⁴ = 11801509445087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801509445123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6853372801 + ... + 6853374522.

It is an arithmetic number, because the mean of its divisors is an integer number (1151366775216).

Almost surely, 2^{11801509445103} is an apocalyptic number.

11801509445103 is a deficient number, since it is larger than the sum of its proper divisors (6620358958353).

11801509445103 is a wasteful number, since it uses less digits than its factorization.

11801509445103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13706747374.

The product of its (nonzero) digits is 86400, while the sum is 42.

Adding to 11801509445103 its reverse (30154490510811), we get a palindrome (41955999955914).

The spelling of 11801509445103 in words is "eleven trillion, eight hundred one billion, five hundred nine million, four hundred forty-five thousand, one hundred three".