1557461485980 has 240 divisors, whose sum is σ = 4914875949984. Its totient is φ = 412858736640.

The previous prime is 1557461485919. The next prime is 1557461485981. The reversal of 1557461485980 is 895841647551.

1557461485980 is a `hidden beast` number, since 1 + 5 + 5 + 7 + 4 + 61 + 485 + 98 + 0 = 666.

It is a super-3 number, since 3×1557461485980³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557461485981) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 254027515 + ... + 254033645.

Almost surely, 2^{1557461485980} is an apocalyptic number.

1557461485980 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 1557461485980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2457437974992).

1557461485980 is an abundant number, since it is smaller than the sum of its proper divisors (3357414464004).

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

1557461485980 is a wasteful number, since it uses less digits than its factorization.

1557461485980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 63.

The spelling of 1557461485980 in words is "one trillion, five hundred fifty-seven billion, four hundred sixty-one million, four hundred eighty-five thousand, nine hundred eighty".