1557173428230 has 128 divisors (see below), whose sum is σ = 4344814080000. Its totient is φ = 349786537344.

The previous prime is 1557173428229. The next prime is 1557173428231. The reversal of 1557173428230 is 328243717551.

It is an interprime number because it is at equal distance from previous prime (1557173428229) and next prime (1557173428231).

It is a self number, because there is not a number n which added to its sum of digits gives 1557173428230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557173428231) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 45119521 + ... + 45154019.

It is an arithmetic number, because the mean of its divisors is an integer number (33943860000).

Almost surely, 2^{1557173428230} is an apocalyptic number.

1557173428230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1557173428230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2172407040000).

1557173428230 is an abundant number, since it is smaller than the sum of its proper divisors (2787640651770).

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

1557173428230 is a wasteful number, since it uses less digits than its factorization.

1557173428230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38218.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 1557173428230 in words is "one trillion, five hundred fifty-seven billion, one hundred seventy-three million, four hundred twenty-eight thousand, two hundred thirty".