63421368077 has 4 divisors (see below), whose sum is σ = 63920749056. Its totient is φ = 62921987100.

The previous prime is 63421368047. The next prime is 63421368103. The reversal of 63421368077 is 77086312436.

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 63421368077 - 2⁶ = 63421368013 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 (63421368047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249690299 + ... + 249690552.

It is an arithmetic number, because the mean of its divisors is an integer number (15980187264).

Almost surely, 2^63421368077 is an apocalyptic number.

It is an amenable number.

63421368077 is a deficient number, since it is larger than the sum of its proper divisors (499380979).

63421368077 is a wasteful number, since it uses less digits than its factorization.

63421368077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499380978.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 63421368077 in words is "sixty-three billion, four hundred twenty-one million, three hundred sixty-eight thousand, seventy-seven".