155322211244 has 6 divisors (see below), whose sum is σ = 271813869684. Its totient is φ = 77661105620.

The previous prime is 155322211229. The next prime is 155322211279. The reversal of 155322211244 is 442112223551.

It is a self number, because there is not a number n which added to its sum of digits gives 155322211244.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19415276402 + ... + 19415276409.

It is an arithmetic number, because the mean of its divisors is an integer number (45302311614).

Almost surely, 2^155322211244 is an apocalyptic number.

It is an amenable number.

155322211244 is a deficient number, since it is larger than the sum of its proper divisors (116491658440).

155322211244 is a wasteful number, since it uses less digits than its factorization.

155322211244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38830552815 (or 38830552813 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

Adding to 155322211244 its reverse (442112223551), we get a palindrome (597434434795).

The spelling of 155322211244 in words is "one hundred fifty-five billion, three hundred twenty-two million, two hundred eleven thousand, two hundred forty-four".