1556480808100 has 27 divisors (see below), whose sum is σ = 3377590426497. Its totient is φ = 622587332880.

The previous prime is 1556480807989. The next prime is 1556480808107. The reversal of 1556480808100 is 18080846551.

The square root of 1556480808100 is 1247590.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 560333090916 + 996147717184 = 748554^2 + 998072^2 .

It is a super-2 number, since 2×1556480808100² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1556480808107) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12413521 + ... + 12538279.

Almost surely, 2^{1556480808100} is an apocalyptic number.

1556480808100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1556480808100 is the 1247590-th square number.

It is an amenable number.

1556480808100 is an abundant number, since it is smaller than the sum of its proper divisors (1821109618397).

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

1556480808100 is an frugal number, since it uses more digits than its factorization.

1556480808100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249532 (or 124766 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 46.

The spelling of 1556480808100 in words is "one trillion, five hundred fifty-six billion, four hundred eighty million, eight hundred eight thousand, one hundred".