1555628127600 has 240 divisors, whose sum is σ = 5092996170240. Its totient is φ = 405706752000.

The previous prime is 1555628127551. The next prime is 1555628127707. The reversal of 1555628127600 is 67218265551.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1555628127600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81826896 + ... + 81845904.

It is an arithmetic number, because the mean of its divisors is an integer number (21220817376).

Almost surely, 2^{1555628127600} is an apocalyptic number.

1555628127600 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 1555628127600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2546498085120).

1555628127600 is an abundant number, since it is smaller than the sum of its proper divisors (3537368042640).

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

1555628127600 is a wasteful number, since it uses less digits than its factorization.

1555628127600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20528 (or 20517 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 1555628127600 in words is "one trillion, five hundred fifty-five billion, six hundred twenty-eight million, one hundred twenty-seven thousand, six hundred".