11778274423 has 2 divisors, whose sum is σ = 11778274424. Its totient is φ = 11778274422.

The previous prime is 11778274379. The next prime is 11778274451. The reversal of 11778274423 is 32447287711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11778274423 - 2²¹ = 11776177271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11778271423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5889137211 + 5889137212.

It is an arithmetic number, because the mean of its divisors is an integer number (5889137212).

Almost surely, 2^11778274423 is an apocalyptic number.

11778274423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11778274423 is an equidigital number, since it uses as much as digits as its factorization.

11778274423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 46.

The spelling of 11778274423 in words is "eleven billion, seven hundred seventy-eight million, two hundred seventy-four thousand, four hundred twenty-three".