136403845657678 has 16 divisors (see below), whose sum is σ = 205196373897840. Its totient is φ = 68005056204736.

The previous prime is 136403845657669. The next prime is 136403845657687. The reversal of 136403845657678 is 876756548304631.

It is an interprime number because it is at equal distance from previous prime (136403845657669) and next prime (136403845657687).

It is a super-2 number, since 2×136403845657678² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136403845657678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231177258 + ... + 231766546.

It is an arithmetic number, because the mean of its divisors is an integer number (12824773368615).

Almost surely, 2^{136403845657678} is an apocalyptic number.

136403845657678 is a deficient number, since it is larger than the sum of its proper divisors (68792528240162).

136403845657678 is a wasteful number, since it uses less digits than its factorization.

136403845657678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923171.

The product of its (nonzero) digits is 2438553600, while the sum is 73.

The spelling of 136403845657678 in words is "one hundred thirty-six trillion, four hundred three billion, eight hundred forty-five million, six hundred fifty-seven thousand, six hundred seventy-eight".