135006400778 has 8 divisors (see below), whose sum is σ = 205073014080. Its totient is φ = 66648729420.

The previous prime is 135006400759. The next prime is 135006400783. The reversal of 135006400778 is 877004600531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427235288 + ... + 427235603.

It is an arithmetic number, because the mean of its divisors is an integer number (25634126760).

Almost surely, 2^135006400778 is an apocalyptic number.

135006400778 is a deficient number, since it is larger than the sum of its proper divisors (70066613302).

135006400778 is an equidigital number, since it uses as much as digits as its factorization.

135006400778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854470972.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 135006400778 in words is "one hundred thirty-five billion, six million, four hundred thousand, seven hundred seventy-eight".