11778906785 has 32 divisors (see below), whose sum is σ = 14803430400. Its totient is φ = 8987086080.

The previous prime is 11778906767. The next prime is 11778906791. The reversal of 11778906785 is 58760987711.

It is not a de Polignac number, because 11778906785 - 2¹² = 11778902689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3326546 + ... + 3330084.

It is an arithmetic number, because the mean of its divisors is an integer number (462607200).

Almost surely, 2^11778906785 is an apocalyptic number.

It is an amenable number.

11778906785 is a deficient number, since it is larger than the sum of its proper divisors (3024523615).

11778906785 is a wasteful number, since it uses less digits than its factorization.

11778906785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881.

The product of its (nonzero) digits is 5927040, while the sum is 59.

The spelling of 11778906785 in words is "eleven billion, seven hundred seventy-eight million, nine hundred six thousand, seven hundred eighty-five".