11780622779 has 4 divisors (see below), whose sum is σ = 11782735440. Its totient is φ = 11778510120.

The previous prime is 11780622769. The next prime is 11780622781. The reversal of 11780622779 is 97722608711.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11780622779 - 2⁸ = 11780622523 is a prime.

It is a super-2 number, since 2×11780622779² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11780622769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047944 + ... + 1059125.

It is an arithmetic number, because the mean of its divisors is an integer number (2945683860).

Almost surely, 2^11780622779 is an apocalyptic number.

11780622779 is a deficient number, since it is larger than the sum of its proper divisors (2112661).

11780622779 is an equidigital number, since it uses as much as digits as its factorization.

11780622779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112660.

The product of its (nonzero) digits is 592704, while the sum is 50.

The spelling of 11780622779 in words is "eleven billion, seven hundred eighty million, six hundred twenty-two thousand, seven hundred seventy-nine".