1555544145212 has 48 divisors (see below), whose sum is σ = 2775689011200. Its totient is φ = 762574253760.

The previous prime is 1555544145187. The next prime is 1555544145217. The reversal of 1555544145212 is 2125414455551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555544145217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203628089 + ... + 203635727.

It is an arithmetic number, because the mean of its divisors is an integer number (57826854400).

Almost surely, 2^{1555544145212} is an apocalyptic number.

It is an amenable number.

1555544145212 is a deficient number, since it is larger than the sum of its proper divisors (1220144865988).

1555544145212 is a wasteful number, since it uses less digits than its factorization.

1555544145212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10266 (or 10264 counting only the distinct ones).

The product of its digits is 800000, while the sum is 44.

The spelling of 1555544145212 in words is "one trillion, five hundred fifty-five billion, five hundred forty-four million, one hundred forty-five thousand, two hundred twelve".