1568483216881 has 45 divisors (see below), whose sum is σ = 1864726880523. Its totient is φ = 1319218583760.

The previous prime is 1568483216873. The next prime is 1568483216953. The reversal of 1568483216881 is 1886123848651.

The square root of 1568483216881 is 1252391.

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., 51004157281 + 1517479059600 = 225841^2 + 1231860^2 .

It is not a de Polignac number, because 1568483216881 - 2³ = 1568483216873 is a prime.

It is a super-2 number, since 2×1568483216881² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1568483216801) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3743396490 + ... + 3743396908.

Almost surely, 2^{1568483216881} is an apocalyptic number.

1568483216881 is the 1252391-st square number.

1568483216881 is the 626196-th centered octagonal number.

It is an amenable number.

1568483216881 is a deficient number, since it is larger than the sum of its proper divisors (296243663642).

1568483216881 is an frugal number, since it uses more digits than its factorization.

1568483216881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 487 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 61.

The spelling of 1568483216881 in words is "one trillion, five hundred sixty-eight billion, four hundred eighty-three million, two hundred sixteen thousand, eight hundred eighty-one".