11811948485 has 16 divisors (see below), whose sum is σ = 14325889392. Its totient is φ = 9348672000.

The previous prime is 11811948437. The next prime is 11811948493. The reversal of 11811948485 is 58484911811.

It can be written as a sum of positive squares in 8 ways, for example, as 173422561 + 11638525924 = 13169^2 + 107882^2 .

It is not a de Polignac number, because 11811948485 - 2¹⁰ = 11811947461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688937 + ... + 705873.

It is an arithmetic number, because the mean of its divisors is an integer number (895368087).

Almost surely, 2^11811948485 is an apocalyptic number.

It is an amenable number.

11811948485 is a deficient number, since it is larger than the sum of its proper divisors (2513940907).

11811948485 is a wasteful number, since it uses less digits than its factorization.

11811948485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18424.

The product of its digits is 368640, while the sum is 50.

The spelling of 11811948485 in words is "eleven billion, eight hundred eleven million, nine hundred forty-eight thousand, four hundred eighty-five".