1555444313102 has 16 divisors (see below), whose sum is σ = 2337579663360. Its totient is φ = 776251272888.

The previous prime is 1555444312999. The next prime is 1555444313149. The reversal of 1555444313102 is 2013134445551.

It is a super-2 number, since 2×1555444313102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22369313 + ... + 22438739.

It is an arithmetic number, because the mean of its divisors is an integer number (146098728960).

Almost surely, 2^{1555444313102} is an apocalyptic number.

1555444313102 is a deficient number, since it is larger than the sum of its proper divisors (782135350258).

1555444313102 is a wasteful number, since it uses less digits than its factorization.

1555444313102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90455.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 1555444313102 its reverse (2013134445551), we get a palindrome (3568578758653).

The spelling of 1555444313102 in words is "one trillion, five hundred fifty-five billion, four hundred forty-four million, three hundred thirteen thousand, one hundred two".