11455979785 has 16 divisors (see below), whose sum is σ = 14194091520. Its totient is φ = 8866984320.

The previous prime is 11455979783. The next prime is 11455979789. The reversal of 11455979785 is 58797955411.

It is not a de Polignac number, because 11455979785 - 2¹ = 11455979783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11455979783) 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, 974221 + ... + 985909.

It is an arithmetic number, because the mean of its divisors is an integer number (887130720).

Almost surely, 2^11455979785 is an apocalyptic number.

It is an amenable number.

11455979785 is a deficient number, since it is larger than the sum of its proper divisors (2738111735).

11455979785 is a wasteful number, since it uses less digits than its factorization.

11455979785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18048.

The product of its digits is 15876000, while the sum is 61.

The spelling of 11455979785 in words is "eleven billion, four hundred fifty-five million, nine hundred seventy-nine thousand, seven hundred eighty-five".