1555136164100 has 72 divisors (see below), whose sum is σ = 3419516970240. Its totient is φ = 613793157120.

The previous prime is 1555136164081. The next prime is 1555136164151. The reversal of 1555136164100 is 14616315551.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12634052 + ... + 12756548.

Almost surely, 2^{1555136164100} is an apocalyptic number.

1555136164100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1555136164100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1709758485120).

1555136164100 is an abundant number, since it is smaller than the sum of its proper divisors (1864380806140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555136164100 is a wasteful number, since it uses less digits than its factorization.

1555136164100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124197 (or 124190 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 1555136164100 in words is "one trillion, five hundred fifty-five billion, one hundred thirty-six million, one hundred sixty-four thousand, one hundred".