1555145130000 has 400 divisors, whose sum is σ = 6258979685376. Its totient is φ = 323146560000.

The previous prime is 1555145129987. The next prime is 1555145130041. The reversal of 1555145130000 is 315415551.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 1555145130000.

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 79 ways as a sum of consecutive naturals, for example, 1973389 + ... + 2646611.

Almost surely, 2^{1555145130000} is an apocalyptic number.

1555145130000 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 1555145130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3129489842688).

1555145130000 is an abundant number, since it is smaller than the sum of its proper divisors (4703834555376).

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

1555145130000 is a wasteful number, since it uses less digits than its factorization.

1555145130000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673272 (or 673251 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 1555145130000 in words is "one trillion, five hundred fifty-five billion, one hundred forty-five million, one hundred thirty thousand".