1556325112680 has 640 divisors, whose sum is σ = 5972859557280. Its totient is φ = 360069857280.

The previous prime is 1556325112679. The next prime is 1556325112723. The reversal of 1556325112680 is 862115236551.

1556325112680 is a `hidden beast` number, since 1 + 5 + 5 + 6 + 32 + 511 + 26 + 80 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 6912592164 + 1549412520516 = 83142^2 + 1244754^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 974529642 + ... + 974531238.

Almost surely, 2^{1556325112680} is an apocalyptic number.

1556325112680 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 1556325112680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2986429778640).

1556325112680 is an abundant number, since it is smaller than the sum of its proper divisors (4416534444600).

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

1556325112680 is a wasteful number, since it uses less digits than its factorization.

1556325112680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 2998 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 1556325112680 in words is "one trillion, five hundred fifty-six billion, three hundred twenty-five million, one hundred twelve thousand, six hundred eighty".