136400155 has 8 divisors (see below), whose sum is σ = 168960384. Its totient is φ = 105600000.

The previous prime is 136400149. The next prime is 136400161. The reversal of 136400155 is 551004631.

It is an interprime number because it is at equal distance from previous prime (136400149) and next prime (136400161).

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

It is not a de Polignac number, because 136400155 - 2¹³ = 136391963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439846 + ... + 440155.

It is an arithmetic number, because the mean of its divisors is an integer number (21120048).

Almost surely, 2^136400155 is an apocalyptic number.

136400155 is a deficient number, since it is larger than the sum of its proper divisors (32560229).

136400155 is an equidigital number, since it uses as much as digits as its factorization.

136400155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880037.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 136400155 is about 11679.0476923420. The cubic root of 136400155 is about 514.7601924963.

Adding to 136400155 its reverse (551004631), we get a palindrome (687404786).

The spelling of 136400155 in words is "one hundred thirty-six million, four hundred thousand, one hundred fifty-five".