255606153442 has 8 divisors (see below), whose sum is σ = 383858715996. Its totient is φ = 127653248112.

The previous prime is 255606153431. The next prime is 255606153449. The reversal of 255606153442 is 244351606552.

It can be written as a sum of positive squares in 2 ways, for example, as 253593823561 + 2012329881 = 503581^2 + 44859^2 .

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

It is not an unprimeable number, because it can be changed into a prime (255606153449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74912173 + ... + 74915584.

Almost surely, 2^255606153442 is an apocalyptic number.

255606153442 is a deficient number, since it is larger than the sum of its proper divisors (128252562554).

255606153442 is a wasteful number, since it uses less digits than its factorization.

255606153442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149828612.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 255606153442 its reverse (244351606552), we get a palindrome (499957759994).

The spelling of 255606153442 in words is "two hundred fifty-five billion, six hundred six million, one hundred fifty-three thousand, four hundred forty-two".