63356403421261 has 32 divisors (see below), whose sum is σ = 69271249766400. Its totient is φ = 57783748486464.

The previous prime is 63356403421231. The next prime is 63356403421277. The reversal of 63356403421261 is 16212430465336.

It is a cyclic number.

It is not a de Polignac number, because 63356403421261 - 2⁹ = 63356403420749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63356403421231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7394050 + ... + 13467916.

It is an arithmetic number, because the mean of its divisors is an integer number (2164726555200).

Almost surely, 2^{63356403421261} is an apocalyptic number.

It is an amenable number.

63356403421261 is a deficient number, since it is larger than the sum of its proper divisors (5914846345139).

63356403421261 is a wasteful number, since it uses less digits than its factorization.

63356403421261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074185.

The product of its (nonzero) digits is 1866240, while the sum is 46.

Adding to 63356403421261 its reverse (16212430465336), we get a palindrome (79568833886597).

The spelling of 63356403421261 in words is "sixty-three trillion, three hundred fifty-six billion, four hundred three million, four hundred twenty-one thousand, two hundred sixty-one".