63040001641 has 4 divisors (see below), whose sum is σ = 63040591492. Its totient is φ = 63039411792.

The previous prime is 63040001597. The next prime is 63040001659. The reversal of 63040001641 is 14610004036.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 32126977600 + 30913024041 = 179240^2 + 175821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63040001641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63040031641) 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, 84630 + ... + 365023.

It is an arithmetic number, because the mean of its divisors is an integer number (15760147873).

Almost surely, 2^63040001641 is an apocalyptic number.

It is an amenable number.

63040001641 is a deficient number, since it is larger than the sum of its proper divisors (589851).

63040001641 is a wasteful number, since it uses less digits than its factorization.

63040001641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589850.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 63040001641 its reverse (14610004036), we get a palindrome (77650005677).

The spelling of 63040001641 in words is "sixty-three billion, forty million, one thousand, six hundred forty-one".