63140420306561 has 8 divisors (see below), whose sum is σ = 68250154066920. Its totient is φ = 58066797739392.

The previous prime is 63140420306533. The next prime is 63140420306563. The reversal of 63140420306561 is 16560302404136.

It can be written as a sum of positive squares in 4 ways, for example, as 5003699241025 + 58136721065536 = 2236895^2 + 7624744^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63140420306561 - 2³⁰ = 63139346564737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63140420306563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9027794660 + ... + 9027801653.

It is an arithmetic number, because the mean of its divisors is an integer number (8531269258365).

Almost surely, 2^{63140420306561} is an apocalyptic number.

It is an amenable number.

63140420306561 is a deficient number, since it is larger than the sum of its proper divisors (5109733760359).

63140420306561 is a wasteful number, since it uses less digits than its factorization.

63140420306561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18055596595.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 63140420306561 in words is "sixty-three trillion, one hundred forty billion, four hundred twenty million, three hundred six thousand, five hundred sixty-one".