11503398535 has 16 divisors (see below), whose sum is σ = 14421486240. Its totient is φ = 8797398400.

The previous prime is 11503398499. The next prime is 11503398539. The reversal of 11503398535 is 53589330511.

It is not a de Polignac number, because 11503398535 - 2⁷ = 11503398407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11503398491 and 11503398500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11503398539) 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, 378097 + ... + 407386.

It is an arithmetic number, because the mean of its divisors is an integer number (901342890).

Almost surely, 2^11503398535 is an apocalyptic number.

11503398535 is a deficient number, since it is larger than the sum of its proper divisors (2918087705).

11503398535 is a wasteful number, since it uses less digits than its factorization.

11503398535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785618.

The product of its (nonzero) digits is 243000, while the sum is 43.

The spelling of 11503398535 in words is "eleven billion, five hundred three million, three hundred ninety-eight thousand, five hundred thirty-five".