155135205244 has 12 divisors (see below), whose sum is σ = 280848216600. Its totient is φ = 74892857648.

The previous prime is 155135205221. The next prime is 155135205259. The reversal of 155135205244 is 442502531551.

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, 668686114 + ... + 668686345.

It is an arithmetic number, because the mean of its divisors is an integer number (23404018050).

Almost surely, 2^155135205244 is an apocalyptic number.

It is an amenable number.

155135205244 is a deficient number, since it is larger than the sum of its proper divisors (125713011356).

155135205244 is a wasteful number, since it uses less digits than its factorization.

155135205244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337372492 (or 1337372490 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 155135205244 its reverse (442502531551), we get a palindrome (597637736795).

The spelling of 155135205244 in words is "one hundred fifty-five billion, one hundred thirty-five million, two hundred five thousand, two hundred forty-four".