11145553475 has 48 divisors (see below), whose sum is σ = 16553256000. Its totient is φ = 7435895040.

The previous prime is 11145553427. The next prime is 11145553487. The reversal of 11145553475 is 57435554111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11145553475 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 299711 + ... + 334839.

It is an arithmetic number, because the mean of its divisors is an integer number (344859500).

Almost surely, 2^11145553475 is an apocalyptic number.

11145553475 is a deficient number, since it is larger than the sum of its proper divisors (5407702525).

11145553475 is an equidigital number, since it uses as much as digits as its factorization.

11145553475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35197 (or 35178 counting only the distinct ones).

The product of its digits is 210000, while the sum is 41.

The spelling of 11145553475 in words is "eleven billion, one hundred forty-five million, five hundred fifty-three thousand, four hundred seventy-five".