63532460561 has 4 divisors (see below), whose sum is σ = 63571996992. Its totient is φ = 63492924132.

The previous prime is 63532460557. The next prime is 63532460609. The reversal of 63532460561 is 16506423536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63532460561 - 2² = 63532460557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63532460461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19765805 + ... + 19769018.

It is an arithmetic number, because the mean of its divisors is an integer number (15892999248).

Almost surely, 2^63532460561 is an apocalyptic number.

It is an amenable number.

63532460561 is a deficient number, since it is larger than the sum of its proper divisors (39536431).

63532460561 is a wasteful number, since it uses less digits than its factorization.

63532460561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39536430.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 63532460561 in words is "sixty-three billion, five hundred thirty-two million, four hundred sixty thousand, five hundred sixty-one".