1553301005881 has 2 divisors, whose sum is σ = 1553301005882. Its totient is φ = 1553301005880.

The previous prime is 1553301005873. The next prime is 1553301005909. The reversal of 1553301005881 is 1885001033551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1537091642025 + 16209363856 = 1239795^2 + 127316^2 .

It is an emirp because it is prime and its reverse (1885001033551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1553301005881 - 2³ = 1553301005873 is a prime.

It is a super-2 number, since 2×1553301005881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1553301005381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776650502940 + 776650502941.

It is an arithmetic number, because the mean of its divisors is an integer number (776650502941).

Almost surely, 2^{1553301005881} is an apocalyptic number.

It is an amenable number.

1553301005881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553301005881 is an equidigital number, since it uses as much as digits as its factorization.

1553301005881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 1553301005881 in words is "one trillion, five hundred fifty-three billion, three hundred one million, five thousand, eight hundred eighty-one".