53563976881 has 2 divisors, whose sum is σ = 53563976882. Its totient is φ = 53563976880.

The previous prime is 53563976867. The next prime is 53563976897. The reversal of 53563976881 is 18867936535.

53563976881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52356761856 + 1207215025 = 228816^2 + 34745^2 .

It is a cyclic number.

It is not a de Polignac number, because 53563976881 - 2²¹ = 53561879729 is a prime.

It is a super-2 number, since 2×53563976881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53563976801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26781988440 + 26781988441.

It is an arithmetic number, because the mean of its divisors is an integer number (26781988441).

Almost surely, 2^53563976881 is an apocalyptic number.

It is an amenable number.

53563976881 is a deficient number, since it is larger than the sum of its proper divisors (1).

53563976881 is an equidigital number, since it uses as much as digits as its factorization.

53563976881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 61.

The spelling of 53563976881 in words is "fifty-three billion, five hundred sixty-three million, nine hundred seventy-six thousand, eight hundred eighty-one".