63665100631043 has 4 divisors (see below), whose sum is σ = 64321441874760. Its totient is φ = 63008759387328.

The previous prime is 63665100630991. The next prime is 63665100631061. The reversal of 63665100631043 is 34013600156636.

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

It is a cyclic number.

It is not a de Polignac number, because 63665100631043 - 2⁴⁴ = 46072914586627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63665100630985 and 63665100631003.

It is not an unprimeable number, because it can be changed into a prime (63665100331043) 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, 328170621713 + ... + 328170621906.

It is an arithmetic number, because the mean of its divisors is an integer number (16080360468690).

Almost surely, 2^{63665100631043} is an apocalyptic number.

63665100631043 is a deficient number, since it is larger than the sum of its proper divisors (656341243717).

63665100631043 is an equidigital number, since it uses as much as digits as its factorization.

63665100631043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656341243716.

The product of its (nonzero) digits is 699840, while the sum is 44.

Adding to 63665100631043 its reverse (34013600156636), we get a palindrome (97678700787679).

The spelling of 63665100631043 in words is "sixty-three trillion, six hundred sixty-five billion, one hundred million, six hundred thirty-one thousand, forty-three".