11990772777 has 8 divisors (see below), whose sum is σ = 16063468960. Its totient is φ = 7955962560.

The previous prime is 11990772763. The next prime is 11990772797. The reversal of 11990772777 is 77727709911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11990772777 - 2¹⁵ = 11990740009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11990772797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9470752 + ... + 9472017.

It is an arithmetic number, because the mean of its divisors is an integer number (2007933620).

Almost surely, 2^11990772777 is an apocalyptic number.

It is an amenable number.

11990772777 is a deficient number, since it is larger than the sum of its proper divisors (4072696183).

11990772777 is a wasteful number, since it uses less digits than its factorization.

11990772777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18942983.

The product of its (nonzero) digits is 2722734, while the sum is 57.

The spelling of 11990772777 in words is "eleven billion, nine hundred ninety million, seven hundred seventy-two thousand, seven hundred seventy-seven".