155155010665 has 16 divisors (see below), whose sum is σ = 191830574736. Its totient is φ = 120416716800.

The previous prime is 155155010603. The next prime is 155155010669. The reversal of 155155010665 is 566010551551.

It can be written as a sum of positive squares in 8 ways, for example, as 7536149721 + 147618860944 = 86811^2 + 384212^2 .

It is not a de Polignac number, because 155155010665 - 2²⁷ = 155020792937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155155010669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3462016 + ... + 3506545.

It is an arithmetic number, because the mean of its divisors is an integer number (11989410921).

Almost surely, 2^155155010665 is an apocalyptic number.

It is an amenable number.

155155010665 is a deficient number, since it is larger than the sum of its proper divisors (36675564071).

155155010665 is an equidigital number, since it uses as much as digits as its factorization.

155155010665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968700.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 155155010665 in words is "one hundred fifty-five billion, one hundred fifty-five million, ten thousand, six hundred sixty-five".