63773122813 has 4 divisors (see below), whose sum is σ = 63817441920. Its totient is φ = 63728803708.

The previous prime is 63773122799. The next prime is 63773122823. The reversal of 63773122813 is 31822137736.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63773122813 - 2¹³ = 63773114621 is a prime.

It is a super-2 number, since 2×63773122813² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63773122813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63773122823) 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, 22157395 + ... + 22160272.

It is an arithmetic number, because the mean of its divisors is an integer number (15954360480).

Almost surely, 2^63773122813 is an apocalyptic number.

It is an amenable number.

63773122813 is a deficient number, since it is larger than the sum of its proper divisors (44319107).

63773122813 is a wasteful number, since it uses less digits than its factorization.

63773122813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44319106.

The product of its digits is 254016, while the sum is 43.

The spelling of 63773122813 in words is "sixty-three billion, seven hundred seventy-three million, one hundred twenty-two thousand, eight hundred thirteen".