63215106541 has 4 divisors (see below), whose sum is σ = 64923622972. Its totient is φ = 61506590112.

The previous prime is 63215106463. The next prime is 63215106553. The reversal of 63215106541 is 14560151236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35700590916 + 27514515625 = 188946^2 + 165875^2 .

It is a cyclic number.

It is not a de Polignac number, because 63215106541 - 2¹¹ = 63215104493 is a prime.

It is a super-2 number, since 2×63215106541² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63215106497 and 63215106506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63215106641) 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, 854258160 + ... + 854258233.

It is an arithmetic number, because the mean of its divisors is an integer number (16230905743).

Almost surely, 2^63215106541 is an apocalyptic number.

It is an amenable number.

63215106541 is a deficient number, since it is larger than the sum of its proper divisors (1708516431).

63215106541 is a wasteful number, since it uses less digits than its factorization.

63215106541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708516430.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 63215106541 its reverse (14560151236), we get a palindrome (77775257777).

The spelling of 63215106541 in words is "sixty-three billion, two hundred fifteen million, one hundred six thousand, five hundred forty-one".