63534947461 has 4 divisors (see below), whose sum is σ = 63776525472. Its totient is φ = 63293369452.

The previous prime is 63534947449. The next prime is 63534947513. The reversal of 63534947461 is 16474943536.

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 63534947461 - 2¹³ = 63534939269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63534947399 and 63534947408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63534941461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120788611 + ... + 120789136.

It is an arithmetic number, because the mean of its divisors is an integer number (15944131368).

Almost surely, 2^63534947461 is an apocalyptic number.

It is an amenable number.

63534947461 is a deficient number, since it is larger than the sum of its proper divisors (241578011).

63534947461 is a wasteful number, since it uses less digits than its factorization.

63534947461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241578010.

The product of its digits is 6531840, while the sum is 52.

The spelling of 63534947461 in words is "sixty-three billion, five hundred thirty-four million, nine hundred forty-seven thousand, four hundred sixty-one".