13940227787 has 2 divisors, whose sum is σ = 13940227788. Its totient is φ = 13940227786.

The previous prime is 13940227727. The next prime is 13940227789. The reversal of 13940227787 is 78772204931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13940227787 - 2⁸ = 13940227531 is a prime.

Together with 13940227789, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13940227789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970113893 + 6970113894.

It is an arithmetic number, because the mean of its divisors is an integer number (6970113894).

Almost surely, 2^13940227787 is an apocalyptic number.

13940227787 is a deficient number, since it is larger than the sum of its proper divisors (1).

13940227787 is an equidigital number, since it uses as much as digits as its factorization.

13940227787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 13940227787 in words is "thirteen billion, nine hundred forty million, two hundred twenty-seven thousand, seven hundred eighty-seven".