155676673577 has 4 divisors (see below), whose sum is σ = 156483288660. Its totient is φ = 154870058496.

The previous prime is 155676673519. The next prime is 155676673589. The reversal of 155676673577 is 775376676551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 775376676551 = 25367 ⋅30566353.

It can be written as a sum of positive squares in 2 ways, for example, as 40880391721 + 114796281856 = 202189^2 + 338816^2 .

It is a cyclic number.

It is not a de Polignac number, because 155676673577 - 2¹⁸ = 155676411433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155676673507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403307252 + ... + 403307637.

It is an arithmetic number, because the mean of its divisors is an integer number (39120822165).

Almost surely, 2^155676673577 is an apocalyptic number.

It is an amenable number.

155676673577 is a deficient number, since it is larger than the sum of its proper divisors (806615083).

155676673577 is an equidigital number, since it uses as much as digits as its factorization.

155676673577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806615082.

The product of its digits is 194481000, while the sum is 65.

The spelling of 155676673577 in words is "one hundred fifty-five billion, six hundred seventy-six million, six hundred seventy-three thousand, five hundred seventy-seven".