126788824787 has 4 divisors (see below), whose sum is σ = 126993653880. Its totient is φ = 126583995696.

The previous prime is 126788824783. The next prime is 126788824891. The reversal of 126788824787 is 787428887621.

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 126788824787 - 2² = 126788824783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126788824783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102413618 + ... + 102414855.

It is an arithmetic number, because the mean of its divisors is an integer number (31748413470).

Almost surely, 2^126788824787 is an apocalyptic number.

126788824787 is a deficient number, since it is larger than the sum of its proper divisors (204829093).

126788824787 is an equidigital number, since it uses as much as digits as its factorization.

126788824787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204829092.

The product of its digits is 134873088, while the sum is 68.

The spelling of 126788824787 in words is "one hundred twenty-six billion, seven hundred eighty-eight million, eight hundred twenty-four thousand, seven hundred eighty-seven".