63077081321 has 4 divisors (see below), whose sum is σ = 63077860944. Its totient is φ = 63076301700.

The previous prime is 63077081219. The next prime is 63077081323. The reversal of 63077081321 is 12318077036.

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 a de Polignac number, because none of the positive numbers 2^k-63077081321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63077081323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252275 + ... + 435656.

It is an arithmetic number, because the mean of its divisors is an integer number (15769465236).

Almost surely, 2^63077081321 is an apocalyptic number.

It is an amenable number.

63077081321 is a deficient number, since it is larger than the sum of its proper divisors (779623).

63077081321 is an equidigital number, since it uses as much as digits as its factorization.

63077081321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779622.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 63077081321 in words is "sixty-three billion, seventy-seven million, eighty-one thousand, three hundred twenty-one".