63848706561 has 24 divisors (see below), whose sum is σ = 93148821480. Its totient is φ = 42141517056.

The previous prime is 63848706479. The next prime is 63848706569. The reversal of 63848706561 is 16560784836.

63848706561 is a `hidden beast` number, since 6 + 3 + 8 + 4 + 8 + 70 + 6 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8275358961 + 55573347600 = 90969^2 + 235740^2 .

It is not a de Polignac number, because 63848706561 - 2¹³ = 63848698369 is a prime.

It is a super-3 number, since 3×63848706561³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63848706498 and 63848706507.

It is not an unprimeable number, because it can be changed into a prime (63848706569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390495 + ... + 529323.

It is an arithmetic number, because the mean of its divisors is an integer number (3881200895).

Almost surely, 2^63848706561 is an apocalyptic number.

It is an amenable number.

63848706561 is a deficient number, since it is larger than the sum of its proper divisors (29300114919).

63848706561 is a wasteful number, since it uses less digits than its factorization.

63848706561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139345 (or 139342 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 63848706561 in words is "sixty-three billion, eight hundred forty-eight million, seven hundred six thousand, five hundred sixty-one".