11766778022 has 4 divisors (see below), whose sum is σ = 17650167036. Its totient is φ = 5883389010.

The previous prime is 11766778019. The next prime is 11766778039. The reversal of 11766778022 is 22087766711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2941694504 + ... + 2941694507.

It is an arithmetic number, because the mean of its divisors is an integer number (4412541759).

Almost surely, 2^11766778022 is an apocalyptic number.

11766778022 is a deficient number, since it is larger than the sum of its proper divisors (5883389014).

11766778022 is an equidigital number, since it uses as much as digits as its factorization.

11766778022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883389013.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 11766778022 in words is "eleven billion, seven hundred sixty-six million, seven hundred seventy-eight thousand, twenty-two".