136668938455 has 16 divisors (see below), whose sum is σ = 187866584064. Its totient is φ = 93498395040.

The previous prime is 136668938443. The next prime is 136668938467. The reversal of 136668938455 is 554839866631.

It is an interprime number because it is at equal distance from previous prime (136668938443) and next prime (136668938467).

It is not a de Polignac number, because 136668938455 - 2²³ = 136660549847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4514877 + ... + 4545046.

It is an arithmetic number, because the mean of its divisors is an integer number (11741661504).

Almost surely, 2^136668938455 is an apocalyptic number.

136668938455 is a deficient number, since it is larger than the sum of its proper divisors (51197645609).

136668938455 is an equidigital number, since it uses as much as digits as its factorization.

136668938455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9060366.

The product of its digits is 111974400, while the sum is 64.

The spelling of 136668938455 in words is "one hundred thirty-six billion, six hundred sixty-eight million, nine hundred thirty-eight thousand, four hundred fifty-five".