150155656565 has 4 divisors (see below), whose sum is σ = 180186787884. Its totient is φ = 120124525248.

The previous prime is 150155656549. The next prime is 150155656571. The reversal of 150155656565 is 565656551051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565656551051 = 359 ⋅1575644989.

It can be written as a sum of positive squares in 2 ways, for example, as 119423462929 + 30732193636 = 345577^2 + 175306^2 .

It is a cyclic number.

It is not a de Polignac number, because 150155656565 - 2⁴ = 150155656549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15015565652 + ... + 15015565661.

It is an arithmetic number, because the mean of its divisors is an integer number (45046696971).

Almost surely, 2^150155656565 is an apocalyptic number.

It is an amenable number.

150155656565 is a deficient number, since it is larger than the sum of its proper divisors (30031131319).

150155656565 is an equidigital number, since it uses as much as digits as its factorization.

150155656565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30031131318.

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 150155656565 in words is "one hundred fifty billion, one hundred fifty-five million, six hundred fifty-six thousand, five hundred sixty-five".