155895228961 has 8 divisors (see below), whose sum is σ = 156298673160. Its totient is φ = 155491894272.

The previous prime is 155895228949. The next prime is 155895228977. The reversal of 155895228961 is 169822598551.

It can be written as a sum of positive squares in 4 ways, for example, as 98191982736 + 57703246225 = 313356^2 + 240215^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 155895228961 - 2²⁹ = 155358358049 is a prime.

It is a super-2 number, since 2×155895228961² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155895228961.

It is not an unprimeable number, because it can be changed into a prime (155895228941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3360621 + ... + 3406693.

It is an arithmetic number, because the mean of its divisors is an integer number (19537334145).

Almost surely, 2^155895228961 is an apocalyptic number.

It is an amenable number.

155895228961 is a deficient number, since it is larger than the sum of its proper divisors (403444199).

155895228961 is an equidigital number, since it uses as much as digits as its factorization.

155895228961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54755.

The product of its digits is 15552000, while the sum is 61.

The spelling of 155895228961 in words is "one hundred fifty-five billion, eight hundred ninety-five million, two hundred twenty-eight thousand, nine hundred sixty-one".