427937080561 has 3 divisors (see below), whose sum is σ = 427937734731. Its totient is φ = 427936426392.

The previous prime is 427937080499. The next prime is 427937080583. The reversal of 427937080561 is 165080739724.

The square root of 427937080561 is 654169.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 31641650161 + 396295430400 = 177881^2 + 629520^2 .

It is not a de Polignac number, because 427937080561 - 2⁹ = 427937080049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 427937080499 and 427937080508.

It is not an unprimeable number, because it can be changed into a prime (427937089561) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 327085 + ... + 981253.

It is an arithmetic number, because the mean of its divisors is an integer number (142645911577).

It is a 1-persistent number, because it is pandigital, but 2⋅427937080561 = 855874161122 is not.

Almost surely, 2^427937080561 is an apocalyptic number.

427937080561 is the 654169-th square number.

427937080561 is the 327085-th centered octagonal number.

It is an amenable number.

427937080561 is a deficient number, since it is larger than the sum of its proper divisors (654170).

427937080561 is an frugal number, since it uses more digits than its factorization.

427937080561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308338 (or 654169 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 427937080561 in words is "four hundred twenty-seven billion, nine hundred thirty-seven million, eighty thousand, five hundred sixty-one".